Why did the German Aces have so many air kills?

Intro

When it comes to World War 2 many people often cite the high kill numbers of German and Japanese Pilots. The problem is they usually try to use these numbers to make various points on how effective the Axis forces were, well, there are many problems with this. Luckily the third most successful German ace of World War Günther Rall, actually spoke out on this in a polite and indirect manner. He answered the question: why did German Aces have so many air kills compared to Allied pilots. I will use his answer and expand on it a bit.

The conditions stated by Günter Rall

Günther Rall outlined several conditions:
1) First off he notes that in order to shoot down enemy planes, you need a sufficient number of them in your mission area. Many Allied fighter pilots in the later stages of the war never saw a German plane and even if they did, they often heavily outnumbered their foes. In contrast this situation was very uncommon for the German side after late 1941, after all they faced the Soviet Union, British Empire and the United States. Each of them usually matched or outnumbered the Germans in total planes alone, together they had a considerable numerical advantage. Let’s just look at the initial numbers for operation Barbarossa. At the time of the German attack the Soviet Air Force consisted of about 10 000 to 15 000 aircraft, of which 7 500 were deployed in the Soviet’s Western theatre. Whereas the German Air Force had around 2800 aircraft deployed for Operation Barbarossa. (Jones, David R.: From Disaster to Recovery: Russia’s Air Forces in the Two World Wars: p. 272)

Even earlier in the war during the Battle of Britain in summer 1940 the Germans had about the same number of fighter planes as the British. During the height of the battle in August 1940 the Fighter Command had around 1000 fighters, which was about the same number as the Luftwaffe. (Source: Overy – Battle of Britain)

This strategic disparity in planes didn’t necessarily transfer down to the tactical situation. Because the Germans could to a certain degree decide when, where and how to engage the Allied aircraft, particularly when they were attacking Germany and the occupied territories. Thus, tactical victories were still quite common and those improved the kill counts of German pilots.

2) Second, Western Allied pilots usually had a limited number of missions to fly and then they were rotated out or could return home. Due to the lack of German pilots this wasn’t a possibility, hence German pilots usually fought until they were killed, captured or incapacitated in one way or another way.

There were other factors as well, like the initial superiority of German training in combat pilots due to the pre-war build up and experiences from the Spanish civil war. Furthermore, nearly every major country used a different system for the counting of kills and losses in World War 2. Additionally, especially in air combat the kill claims for all sides could be up to twice as high as the losses of their enemies. In short, there are many problems with deriving valid and comparable kill to death ratios from these value across different countries.

In a strategic war the Average Pilot Counts

But let’s take at the bigger picture, one way to properly determine the effectiveness of combat pilots is by taking a look at the average pilot, because in a total war the achievements of exceptional individuals rarely have an effect above the tactical level. But the combined force of a large number of soldiers, pilots or sailors usually is the determining factor that has strategic effects.
This is the reason why proper training programs were so important, something both the Germans and Japanese didn’t put enough emphasis on during the war. Thus, armed forces should not be judged solely based on their current or initial quantity and quality, but also in their ability to maintain this quantity and quality during a war.

Conclusion

To conclude comparing the individual achievements of aces usually doesn’t provide meaningful information about major aspects of the air war. It usually only serves as an excuse for nationalistic tendencies and/or contempt, which in a way is probably the same thing. Most people note that national pride is important, and I agree with that, but I think real pride has no need for a comparison, it comes from within and not from an outside measuring stick. After all, it is important that we respect the achievements and service of all men and women that served, no matter if they flew 50 missions with no kills or were aces with more than 200 kills. Quite many pilots that once fought each other became friends after the war, I think they serve as great examples that mutual respect is a true virtue of a hero and that despite various differences an honest agreement on core values like respect is more important than the color of our flags.

The Interview with Günther Rall

Sources

Books and Articles

Overy, Richard: The Battle of Britain – The Myth and the Reality (amazon.com affiliate link)

Jones, David R.: From Disaster to Recovery: Russia’s Air Forces in the Two World Wars. In: Higham & Harris: Why Air Forces Fail (amazon.com affiliate link)

Jones, David R.: From Disaster to Recovery: Russia’s Air Forces in the Two World Wars. In: Higham & Harris: Why Air Forces Fail (amazon.de affiliate link)

amazon.com amazon.co.uk amazon.ca amazon.de

Disclaimer amazon.com

Bernhard Kast is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.

Disclaimer amazon.co.uk

Bernhard Kast is a participant in the Amazon EU Associates Programme, an affiliate advertising programme designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.co.uk.

Disclaimer amazon.ca

Bernhard Kast is a participant in the Amazon.com.ca, Inc. Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.ca.

Disclaimer amazon.de

Bernhard Kast ist Teilnehmer des Partnerprogramms von Amazon Europe S.à.r.l. und Partner des Werbeprogramms, das zur Bereitstellung eines Mediums für Websites konzipiert wurde, mittels dessen durch die Platzierung von Werbeanzeigen und Links zu amazon.de Werbekostenerstattung verdient werden können.

Online Sources

Ask Historians (reddit) – Why did German fighter aces have so many more kills?

[Debunked] Viking Warfare – Myths and Realities

Intro

Vikings are often portrayed as fierce warrior savages that pillaged and plundered through Europe that were mostly undefeated. Well, according to recent research most of it is wrong or not really distinctive for the Vikings. So, basically a lot of information is wrong what seems to be common knowledge about the Vikings and I am not talking about superficial stuff like horned Helmets here.
This video is based on the article: Williams, Gareth: Raiding and Warfare; in: Brink, Stefan: The Viking World (See Desription)

Definition

First off, Vikings are not an ethnicity, being a Viking is or better was an occupation, like being a Heavy Metal Musician or University Professor. It is derived from the Old Norse word “víkingr”, which means basically raider or pirate. Yet, the term is also used more openly even among scholars, to quote the historian Gareth Williams “although trading, crafts, seafaring and settlement and many other aspects of Viking society may be equally important, it is the raiding which gives us the concept of a Viking Age.” (Williams, Gareth: Raiding and Warfare; in: The Viking World (ed. Brink, Stefan); p. 193)

Motivation for Early Raids

Now, if anyone tells you why the Vikings started their early raids well, that is cute, because the current state of research is we don’t really know and furthermore we also can’t agree. Although there is a consensus on the later raids and they were primarily motivated by desire to gain wealth, when they were directed against Western Europe, whereas the motivations within internal raids in Scandinavia were motivated by politics. (Williams, Gareth: Raiding and Warfare; in: The Viking World (ed. Brink, Stefan); p. 193-194)

Myths and their Origins

So let’s take a look at the common myths. First off, these myths and portrayals were influenced by various factors. Since the Vikings plundered various monasteries and those were the leading centers of literacy in the Middle Ages, History in that case was written mostly by the losers. In contrast the Viking culture was mostly a non-literate culture, they had an alphabet but only produced a very limited amount of written documents and those that survived were usually created after Christianity already had a major influence on culture. As if those monks were not bad enough, there were the usual misinterpretations and also glorification later. And as we all know, if you cross a Husky with a rat often enough you get a Chihuahua. (Williams, Gareth: Raiding and Warfare; in: The Viking World (ed. Brink, Stefan) & https://en.wikipedia.org/wiki/Vikings#Literature_and_language )

Anyway, let’s combine some common views and myths about the Vikings into one statement: Vikings were fierce undefeated and brutal warriors that lusted for battle, who pillaged and plundered through the peaceful Christian coastal areas of Western Europe like a gang of hoodlums and committed unspeakable atrocities.
Time to examine the various parts of this little sentence.

Pillaging and plundering the peaceful coastal areas

“pillaged and plundered through the peaceful Christian coastal areas of Western Europe”

Did the Vikings pillaged and plundered coastal areas. Yes, they did and since there were over achievers, they did even more. They also attacked mostly landlocked targets like Paris by using their superior ships that had a great deal of carrying capacity and could also travel in relatively shallow water. (Williams, Gareth: Raiding and Warfare; in: The Viking World (ed. Brink, Stefan); p. 197)

Yet, these areas were definitely not peaceful, there was regular warfare between the many kingdoms throughout that era. Nor were the Vikings the only ones that attacked Christian monasteries or churches, attacks from Christian weren’t unknown at that time. (Williams, Gareth: Raiding and Warfare; in: The Viking World (ed. Brink, Stefan); p. 195-196)
This also brings us to the next part the brutality and atrocities.

Savage and Brutal

“brutal warriors that lusted for battle … and committed unspeakable atrocities.”

One of the common brutality cited is the so called blood-eagle, which allegedly was the cutting up of rips and pulling out the lungs of the victim, but there are very few accounts of it and those do not appear in contemporary sources, hence many scholars argue that it was a literary invention, misinterpretation or exaggeration. (https://en.wikipedia.org/wiki/Blood_eagle#Authenticity & (Williams, Gareth: Raiding and Warfare; in: The Viking World (ed. Brink, Stefan); p. 196)

But this doesn’t mean that the Vikings were a bunch of nice guys that politely knocked on your door and asked you if they can talk to you about the Savior of Mankind Thor the Thunder God, but historical behavior needs always be taken into context. Thus, brutality in the Middle Ages can’t be measured by modern standards, but what was common at that era and there is little indication that the Vikings were much more brutal than Christian at that time. (Williams, Gareth: Raiding and Warfare; in: The Viking World (ed. Brink, Stefan); p. 196)

Gang of Hoodlums

“like a gang of hoodlums”

Although Vikings are usually portrayed as fierce warriors, they are also often portrayed more like a gang than an organized war party or military force. Yet, there are many indications that they were well organized. They had a strategy, which had a strong focus on mobility, logistics and recon that allowed them to attack targets by surprise and leave before the enemy could react. Furthermore, it is noted that they avoided battle unless they were confident to win. There is a technical for this, it is called smart. (Williams, Gareth: Raiding and Warfare; in: The Viking World (ed. Brink, Stefan); p. 195-197)

Mobility was a crucial part of Viking raiding campaigns. They achieved this by using their ships, but also horses. These horses were mainly used for transport and usually not during combat, thus they acted as mounted infantry and not as cavalry. It is known that Vikings sometimes attacked from land and sea together, for instance at Exeter in 876. Here they deployed a party that would attack from a land route and meet up with the seafaring party, this freed the land party from carrying around supplies and thus allowed them to move faster. (Williams, Gareth: Raiding and Warfare; in: The Viking World (ed. Brink, Stefan); p. 197)

On the logistical side the Vikings were quite sophisticated, their original raids were small and seasonal, but later on they performed large-scale raids and even performed them during winter. Considering that land wars by leading kingdoms in that era were usually not conducted during winter, this should give you an indication on how well the Vikings were able to manage their supplies. They achieved this feat by taking over monasteries, towns and other places early in winter. Thus, these places were already filled with supplies. Additionally, for the invaded kingdom it was difficult to raise and supply an army during that time of the year, thus counter attacks were unlikely. Williams view on this is particular interesting:
“When even major kingdoms struggled to maintain permanent field armies, the fact that the Vikings managed to campaign for years on end, often in hostile territory, is perhaps a more impressive achievement than any success they may have enjoyed on the battlefield.” (Williams, Gareth: Raiding and Warfare; in: The Viking World (ed. Brink, Stefan); p. 198)
Which means that any portrayal of Vikings as a disorganized force that acted without thought or careful planning is even less valid as my claim to the crown of Prussia. Which brings us to the final part of the statement:

Fierce unbeatable Warriors that lusted for battle

“were fierce undefeated and brutal warriors that lusted for battle”

The Vikings being fierce and undefeated warriors. It is without question that the Vikings were formidable foes, especially since we know that they were smart and well-organized, which is a crucial element for conducting effective military operations. Nevertheless, they also suffered notable defeats besides their notable victories and thus were far from undefeated.

Conclusion

To conclude, let’s revise what is left of our original myth sentence:
“Vikings were fierce undefeated and brutal warriors that lusted for battle, which pillaged and plundered through the peaceful Christian coastal areas of Western Europe like a gang of hoodlums and committed unspeakable atrocities.”
And the reality was probably a bit closer to the following statement:
“Vikings were fierce and organized warriors that attacked selected targets in coastal areas and near large rivers due to superior strategic mobility. Their grasp of logistics allowed them to perform raids even during winter, which was very uncommon at that time, unlike the raids itself and the committed violence, which were common occurrence in that time period among Christian kingdoms.”
How they were stopped from Raiding?
So, since we tackled the myths, one question remains, how could the Vikings stopped from raiding?
As mentioned before Viking Raids relied heavily on mobility and supplies, thus denying them both was a viable defensive measure. This was achieved by building fortified bridges that denied them access to the various rivers that were vital for their raids. Additionally, fortified towns on the coasts allowed the defenders to hold out longer and also serve as supply bases for defending armies. (Williams, Gareth: Raiding and Warfare; in: The Viking World (ed. Brink, Stefan); p. 198-199)

Distinctive for Viking Warfare

And finally, it should be noted that Viking battle techniques and weapons were actually quite similar to that of their foes. The most distinctive feature of the Vikings was their emphasis of ships, strategic mobility and logistics, which allowed them to outmaneuver their enemies before they could properly react. Thus, the main difference between Viking Warfare and that of their foes was on the strategic not the tactical level. And we all know it is more comforting for the ego to state that one was overwhelmed by brutality rather than to admit that one was outsmarted by so called Savages.

Recommendation

Now, if you are interested in Vikings I have two recommendations for you, first the book Viking World from 2011 with more than 700 pages, it is full of scholarly articles about everything concerning the Vikings, I only read a few articles but those were excellent.
And second an album trilogy from the German Heavy Metal Band Rebellion, which contains some of my favorite songs, most notably Ruling the Waves and God of Thunder, see the links to videos and amazon in the description.

Sources

Books & Articles

Williams, Gareth: Raiding and Warfare; in: The Viking World (ed. Brink, Stefan) (amazon.com link)

Pedersen, Anne: Viking Weaponry; in: The Viking World (ed. Brink, Stefan) (amazon.com link)

amazon.com amazon.co.uk amazon.ca amazon.de

Disclaimer amazon.com

Bernhard Kast is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.

Disclaimer amazon.co.uk

Bernhard Kast is a participant in the Amazon EU Associates Programme, an affiliate advertising programme designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.co.uk.

Disclaimer amazon.ca

Bernhard Kast is a participant in the Amazon.com.ca, Inc. Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.ca.

Disclaimer amazon.de

Bernhard Kast ist Teilnehmer des Partnerprogramms von Amazon Europe S.à.r.l. und Partner des Werbeprogramms, das zur Bereitstellung eines Mediums für Websites konzipiert wurde, mittels dessen durch die Platzierung von Werbeanzeigen und Links zu amazon.de Werbekostenerstattung verdient werden können.

Special Thanks & Credits

Special thanks to Peter Rempel for providing the font PR Viking for more information and other fonts check out his page here: Peter Rempel Fonts

Online Resources

Vikings – Wikipedia Article

Why the Imperial Japanese Air Forces Failed in World War 2

Intro

The Second World War to a large degree was determined by the disparity of the economic capacities and manpower between the Axis and the Allies. Yet, solely looking at production numbers and men can lead to a deterministic or even fatalistic interpretation that prevents us from looking at other factors that also played a vital role in the defeat of the Axis Forces.
This video is based on the article: The Imperial Japanese Air Forces by Osamu Tagaya. (See Description)

High Level Organization

The Japanese leadership was well aware of its limited capabilities in both resources and industrial capacity. Yet, it failed to unify the two branches of the Japanese Armed Forces, notably the Imperial Japanese Army and the Imperial Japanese Navy to focus on one strategy in the years leading to the war. The Army for a large part saw as their main enemy in Russia and later the Soviet Union, while the Navy determined the United States of America as their principal foe. Both branches couldn’t agree and since they were not subordinates of the Japanese Government, there was no unifying power to force them into cooperation. This lead to two different strategies that were competing with each other for resources, manpower and equipment. This also lead to parallel development of similar aircraft types, like bombers and prevented the creation of uniform standards. (Tagaya: p. 178-180) Such inefficiencies and waste of resources are problematic in general, but in combination with limited industrial capacity and resources such effects weigh several magnitudes higher than for industrial giants, like the United States.

Army Shortcomings – The Japanese Army Air Force (JAAF)

Let’s take a look at the shortcomings of the Japanese Army Air Force. Since the Japanese Army Air Force was mostly developed for tactical support of a land war against Soviet Union, it lacked capabilities for naval navigation and long-range capabilities, something that was crucial for their use in South East Asia and especially the islands of the Pacific. As a result the Navy had to fly long-range bombing missions in the Philippines for the Army. (Tagaya: p. 179-180)

One major problem was that the Japanese Army lacked strong advocates for air power in its ranks. This was due to the fact that the Japanese had a very limited amount of army officers with air combat experience. Although the Japanese were among the first to use combat aircraft in World War 1, it was a short a limited engagement in 1914. These experiences were too limited to convince enough officers of the importance air power. The army initiated two times the creation of an independent air force as a third branch, like Germany and the United Kingdom with the Royal Air Force. Yet, the Navy disagreed, because they feared that similar to the British RAF that the Fleet Air Arm would only play a marginal role in an independent branch. (Tagaya: p. 180-185)
The main roles for the Army Air Force lay in recon and air combat, whereas bombing missions received only limited attention. This is reflected in the slow build-up of its bomber squadrons in the 1920ies.(Tagaya: p. 182)

For a short time the Army like the Navy saw the United States as their main opponent, during that period the development of a large four engine bomber was started. Furthermore, there were projects to use aircraft catapults on land-bases in order to circumvent the problem of building long air strips after an invasion of the Philippines. Yet, once the Army focused again on Russia and Asia, these projects were discontinued in the early 1930ies. Due to annexation of Manchuria by the Japanese an extended land border to the Soviet Union changed the strategic situation. Furthermore, the development of the TB-3 bomber by the Soviets put the Japanese home islands into the range of the Soviet Air Force. (Tagaya: p. 182-185)
Around the mid 1930ies the Army started a major expansion of its air arm and in 1937 declared the destruction of the enemy’s air force as the primary mission. Yet, in the conflicts in China and with the Soviet Union the Army Air Force mainly contributed on a tactical level. Furthermore, in 1940 the emphasis on destruction of the enemy air force was weakened and the offensive power remained mostly on a tactical level. (Tagaya: p. 185)

The main problem with Japanese Army aviation lay in a lack of initiative and a conservative senior leadership that was mostly reacting to international developments instead of formulating its own doctrines. This lead to a shortage of officers with proper experience during the rapid expansion. (Tagaya: p. 186)
“This often resulted in poor leadership and unimaginative staff work, giving rise to operations that where questionable in their effectiveness and all too predictable and conventional in nature.” -Osamu Tagaya:The Imperial Japanese Air Forces, p. 186 (link in the description)

The Imperial Japanese Navy (IJN)

IJN Achievements

Now, before we take a look at the shortcoming of the Imperial Japanese Navy, which were quite different to those of the Army. Let’s take a look at their initial achievements first.
The Navy unlike the Army had strong advocates for air power in its ranks. This is due to the fact the modern Navies usually have a more open attitude towards technology and innovation. After all an infantry division consists mostly of men, whereas a battleships consists mostly of steel with a lot of technological components and a handful men.
The Imperial Japanese Navy was a pioneer in naval aviation. It built the world’s first purpose-built aircraft carrier the HIJMS Hōshō in 1922. Furthermore, it introduced the first operational deployment of an all-metal monoplane carrier-fighter plane in 1937. And in 1940 it was able to perform the mass deployment of torpedo and dive-bombers in coordination with fighters launched from several aircraft carries, something no navy at that time was able to do. Right before Pearl Harbor, the IJN had more aircraft carriers than any other Navy and had the world’s leading naval air arm.

Furthermore, there were some other aspects were the IJN achieved leading roles. In terms of aircraft the Zero outmatched all it counterparts and sometimes even land-based aircraft. Furthermore, the IJN possessed a strong land-based naval bomber force the so called “rikko” units, which were initially developed to counter the limits on the number of carriers due to Naval Treaties. These units sank the Royal Navy’s battleships the HMS Prince of Wales and HMS Repulse early on in the War. Also the attack on Pearl Harbor and the following half year the IJN basically marked the start of domination of aircraft carriers in naval warfare. (Tagaya: p. 186-187)

IJN Shortcomings

Yet, despite all these achievements in naval aviation, it is quite surprising that the IJN didn’t drop the battleship as a core weapon prior or after these initial successes of carriers. Its fleet organization still focused on the battleship and didn’t create a complete carrier task force organization, unlike the US Navy later in the War. Although, the enormous amounts of resources put into building the Yamato and Musashi super-battleships are to a certain degree understandable, because before the war in the pacific, it was not clear how important carriers would be, but the reluctance to change the naval organization was major flaw. This is also reflected by the presence of Japanese Battleship fleet at the Battle of Midway in June 1942. (Tagaya: p. 187-189)
One major flaw of the IJN was its focus to primarily target enemy warships and often ignore the enemy supply ships. Like after the defeat of the Allied cruisers at the battle of the Savo Island, where the transport ships were left unharmed. This was not just one incident, the IJN submarine doctrine focused on destroying enemy warships as did the Japanese air men. To some degree this maybe hindsight bias, but misjudging the strategic value of merchant ships and supplies, probably stemmed from the focus on a classical decisive battle thinking.
In defense of the Japanese, we need to take into account that even the Western Allies that focused on strategic warfare early on didn’t focus on the German supplies in their bombing campaigns, it took them until May 1944 to focus at fuel production, which severely limited the mobility and combat effectiveness of all German forces. (Deutsche Reich & 2. WK: Band 7; S. 483-485) In the Pacific with its long supply lines between the islands, the strategic value of attacks against merchant shipping was about as crucial as fuel for Germany. Because, without supplies and fuel ground, naval and air forces are extremely limited in their effectiveness. (Tagaya: p. 188-189)

Japanese Capabilities

Let’s take a look at Japanese capabilities. As mentioned before the focus of the Japanese Army and the Japanese Navy was on supporting battles. This narrow view lead to a neglect of logistics and other crucial elements. Similar to the German Luftwaffe there was a certain neglect for all elements that didn’t surround actual combat, yet to a far greater extent. After all, the Luftwaffe possessed one of the leading air transport arms in the beginning of the war quite contrary to the Japanese that lacked transport aircraft. For instance the Japanese lacked pilots for ferrying aircraft to the front lines and their capabilities to construct airfields was limited. Furthermore, there was a severe lack of warning and communication equipment like radar and effective radios sets for fighters. (Tagaya: p. 189; Corum: p. ) Unlike the German Air Force in Western Europe, the Japanese couldn’t rely on an existing infrastructure in the Pacific, thus these shortcomings reduced the combat effectiveness and readiness of their units. As a result naval bombers were used several times to drop supplies, because there were no transport aircraft available. This was in stark contrast to the Allies that airlifted an infantry division from Australia to New Guinea. Furthermore, the Japanese periodically used combat pilot to ferry planes due to lack of ferry pilots.
The lack of mechanized engineering equipment to create and improve existing airfields also had severe long term effects. It not only resulted in a huge delay and back-breaking labor on the Japanese side, additionally, the resulting installations were often very limited in size. As a result Japanese airfields were usually congested with planes that were parked closely to each other on several occasions this lead to severe losses when those air fields were attacked. (Tagaya: p. 189-190)

Often these attacks occurred without any warning, due the Japanese lack of radar equipment. Although the Japanese were once among the leaders in radar technology, they fell behind by not investing and employing the technology for military purposes.

In general the Japanese efforts and capabilities surrounding communication and coordination were limited. There was a lack of effective shortwave radios, thus Japanese fighter pilots basically communicated with visual signals. This prevented to a large degree that they could fully exploit their initial advantages in training and equipment. Furthermore, it also prevented the creation of a proper ground- or carrier-based-control capabilities like the British used during the Battle of Britain or the US Navy developed throughout the war. (Tagaya: p. 189-191)

Japanese Priorities and their Consequences

Let’s take a look at the Japanese Priorities and their consequences. The Japanese focus on battle and combat units was the determining factor throughout the war and the lack of unified strategy between the Navy and Army showed a lack of foresight and strategic perspective. The missing unified strategy prevented a proper and effective allocation of Japans limited resources before and during the war. In contrast even though the United States enjoyed an abundance of industrial capacity and manpower, it still committed to the Grand Strategy of “Germany First” with the British. (Tagaya: p. 191-192)

The Japanese aircraft industry lagged behind in terms of powerful engines, this problem was circumvented by using no armor plates and self-sealing fuel tanks in their early models. Due their experiences fighting the Chinese although they assumed that these measures were sufficient. Unlike the Germans that improved their aircraft after their experiences in the Spanish Civil war.
Thus, during the Guadalcanal campaign Japanese losses increased and their highly-trained airmen thinned out quickly. The lack of proper training programs were similar to the Germans and since the Western Allies put a strong emphasis on training early, this soon lead to a situation where the average Japanese pilot was less trained than the average Allied pilot. (Tagaya: p. 191-193)
“In the end, the initial margin of superior training and experience exhibitied by its airmen proved insufficient to prevent serious attrition.” (Tagaya: p. 193)

Japanese Aircraft Industry

Let’s take a look at the Japanese Aircraft industry. Japan before and shortly after the First World War was dependent on Western technology and imported aircraft and equipment at that time. During the 1930ies they reached self-sufficiency in engine and air-frame design, but their development cycles were still quite long. Furthermore, in aircraft components and subsystems, like radios Japan was still very dependent on Western imports. The duration of the development cycles was a problem. Yet, this could have been dealt with by ordering follow-up types early enough, but the Japanese didn’t issued specifications for follow-up designs early enough. Prior to April 1942 there was serious effort invested to create a successor for the Zero fighter plane. If these measures would have been taken in 1940, then the Japanese could have had an aircraft to counter the Corsair or Hellcat when they arrived, but they still had to fight them with their modified version of the Zero. Furthermore, the initial successor of the Zero the A7M “Reppu” failed and wasn’t abandoned soon enough thus delaying the N1K1-J “Shiden”, which entered combat in October 1944 and its improved version the “Shiden-Kai” (also known by older war thunder players as the UFO) was ready in March 1945. Hence, even though the development cycles of the Japanese were not as fast as that of the United States, this problem could have been averted by ordering a replacement at an early stage. (Tagaya: p. 193-195) As a result the end of the war, the Japanese only fielded a handful of types that introduced during the war, whereas the United States replaced a large amount of its pre-war models.

Result of Training and Industry Policies

As a result, in June 1944 the Japanese faced highly trained US pilots with new superior planes in their slightly upgraded planes flown by poorly-trained pilots. This resulted in an ineffective air force, which had almost no other option but to resort to Kamikaze attacks due to insufficient training and equipment. Note that we are talking about average pilots here, because those win the war not a small number of extraordinary aces. (Tagaya: p. 192-193)

Conclusion

To conclude, similar to Germany, Japan wasn’t ready for a war long-war on a global scale in terms of its industrial capabilities. But only looking at the industrial side of a country when it comes to analyzing a war can be misleading, because one might miss important areas of improvement. One way to avoid this is, to take a look at engagements, when the economic power of the winning factions wasn’t yet the determining factor. For the War in the Pacific these were the Guadalcanal campaign and the Battle of Midway. In both cases the Japanese committed various errors and the United States proved to be a skillful enemy even without superior numbers. Thus, the turning point of the war in the Pacific was before the United States could bring its full numerical advantage to the table. Something that was clearly different from the war in Europe. (Tagaya: p. 196-197) Finally, the Japanese reluctance to move away from their strong focus on combat at the cost of logistics and support, played an important role in the reversal after their initial successes. (Tagaya: p. 196-197)

Notes

The video a summary of the article listed in the sources.

Sources

Books & Articles

  • Tagaya, Osamu: The Imperial Japanese Air Forces, In: Higham & Harris: Why Air Forces Fail
  • Corum, James S.: Defeat of the Luftwaffe, 1935-1945, In: Higham & Harris: Why Air Forces Fail
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Disclaimer

Amazon Associates Program: “Bernhard Kast is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.”

Amazon Partner (amazon.de): “Bernhard Kast ist Teilnehmer des Partnerprogramms von Amazon Europe S.à r.l. und Partner des Werbeprogramms, das zur Bereitstellung eines Mediums für Websites konzipiert wurde, mittels dessen durch die Platzierung von Werbeanzeigen und Links zu Amazon.de Werbekostenerstattung verdient werden kann.”

Atlantic Wall – Example of a Coastal Defense Position (Atlantikwall)

Background

The Atlantic Wall or “Atlantikwall” in German was an extensive system of coastal defences and fortifications reaching from the South of France to the Northern parts of Norway. In some areas the defenses were quite formidable, whereas in others areas they were lacking. In this video I give you a short overview on the French parts of the Atlantic Wall and then show you how an individual infantry division was setup for coastal defense.

Principles and Organization of the Defense

Let’s start with the basic principles of the German defensive setup. The German High command analyzed the amphibious operations in Italy in 1943 and concluded that the most successful way to defend against an Invasion was to destroy the enemies landing force as soon as possible. The plan was to deploy strong forces in the coastal area in fortified positions, these troops should be stacked properly to provide a deep defense and supported by local reserves for counter-attacks. The units were ordered to hold out until the end. This should provide enough time to mount a strategic counter-attack with motorized units. (Deutsche Reich & 2. WK: Band 7; S. 463 (amazon.de affiliate link))

To give you some direct references, the German Army Command in the West (OB West) and it’s commander Generalfeldmarschall Rundstedt noted:
“Unser Vorfeldhindernis ist das Meer, der beste Panzergraben!” – “Our first defensive obstacle is the sea, the best tank ditch!” (Deutsche Reich & 2. WK: Band 7; S. 463)
And also “Im Bereich West gibt es kein Ausweichen.” (Deutsche Reich & 2. WK: Band 7; S. 463 (amazon.com affiliate link to the English Version))
“In the Area West there is no evasion.”

The last directive was probably influenced by the fact that the chances of surrendering were considerably higher on the Western Front than on the Eastern Front, because it was known to most German soldiers that they were treated quite well by the Western Allies. Thus surrendering was a viable option to German soldiers on the Western front. The German Generals were very well aware of this and it was quite troublesome for them. (Deutsche Reich & 2. WK: Band 7; S. 499-500) Since, we covered the basic principles of the defense, let’s take a look at the high-level organization of the defense.

Organization of the Defense on the strategic level

Among the German Commanders and leaders there was a consensus about the general defensive strategy, but there was some serious debate on how the units for a counter-attack should be deployed. There were basically two approaches, a decentralized approach in which motorized units were located closely to the front lines or a centralized approach, whereas a large group of units was stationed farther from the front. (Deutsche Reich & 2. WK: Band 7; S. 464)

In January 1944 a decisions was reached. One part of the tank divisions would be stationed close to the landing areas and additionally a central reserve would be deployed in Paris. The whole discussion and planning of the defense strategy was almost exclusively performed by army commanders, the Navy and Air Force were not really considered. (Deutsche Reich & 2. WK: Band 7; S. 464-465) So let’s take a look at the construction of the Atlantic Wall.

This is also reflected by the fact that the intention was to destroy the enemy during the invasion or shortly afterwards, but not prior to the landing, which was of course almost impossible due to Allied Air and Naval superiority. Yet, it underlines again the primacy of the German Army above the other branches. (Deutsche Reich & 2. WK: Band 7; S. 465)

Construction Process

The construction of the fortifications initially was mainly aimed at freeing up soldiers for the other front lines. Yet this changed in Fall 1943, up from that point more focus was put into providing a strong defense against an upcoming invasion.(Deutsche Reich & 2. WK: Band 7; S. 466)

The German High Command assumed an attack would be most likely in the Calais and Le Havre area, thus there was a strong regional focus on these areas. The regions of Normandy and Bretagne were of lesser importance, but everything else in France was of minor importance and very little fortifications were planned and constructed there. (Deutsche Reich & 2. WK: Band 7; S. 465)
The constructions of the Atlantic Wall required a large amount of construction workers. Although many foreign workers were transferred into Germany, in June 1944 still around 140 000 non-Germans and 18 000 Germans were used for the build-up of the Atlantic Wall. (Deutsche Reich & 2. WK: Band 7; S. 466) Yet, a large part of these workers were used to repair damages from the Allied bombing campaign and French Resistance attacks, furthermore some were also used for building up V-weapon bases. (Deutsche Reich & 2. WK: Band 7; S. 466) Let’s take a look at the total numbers.
Until the end of 1943 around 8500 fortifications and emplacements were constructed. Until the invasion about 12 200 (12247) fortifications in total were finished on the Western French Coast. Additionally, half a million beach obstacles and 6.5 million mines were placed. These fortifications were equipped with a large amount of artillery, anti-tank and anti-aircraft, which were often protected by concrete emplacements. In the Normandy region there was often a lack of resources and workers, thus even some large guns were without proper fortifications. Yet, in the areas were the Germans anticipated an Allied attack the fortifications were numerous and well-protected against bombing attacks. (Deutsche Reich & 2. WK: Band 7; S. 467-470)

Organization of the Units

Now, the chain of command and the authorities were quite complicated due to regional, functional and other structures. Some of these structures may have been useful, but often it was more about the prestige of some commanders. I spare you the details and just give you an example on how the various “relationships” of the 2nd Panzerdivision. (Deutsche Reich & 2. WK: Band 7; S. 474-475)

The division was part of the Panzergruppe West, operationally it was under the authority of the I. SS-Panzerkorps, territorially (05:00) it was under the command of the Military Administration in Belgium and Northern France and in terms of supplies it was attached to the 15h Army. This layout was not an isolated case. (Deutsche Reich & 2. WK: Band 7; S. 474-475)
CAPTION: „I will get a Bier now, because you are all drunk anyway.“
After all German bureaucracy is like war, and war never changes.

Overall Troop Quality

Let’s take at the quality of the troops. The units that manned the fortifications of the Atlantic Wall were mostly second rate German infantry divisions, they so called “bodenständige Divisionen”, which were infantry division intended for a static defense. They only had a very limited amount of transport capacity, no recon units and usually only 2 infantry regiments instead of 3. Furthermore, they often lacked properly trained NCOs and officers. These units were also often equipped with various captured equipment, thus of lower quality and complicating the logistical situation. (Deutsche Reich & 2. WK: Band 7; S. 481) In total around 25 of these static divisions were present since Fall 1943. (Deutsche Reich & 2. WK: Band 7; S. 476)
Additionally, various units were shipped to France to be regrouped and reinforced, yet usually these units were extremely depleted and exhausted. Thus, they were of limited use especially since the often replaced other troops that were transferred out to other front lines. (Deutsche Reich & 2. WK: Band 7; S. 476)

The motorized divisions, which should constitute a counter-attack were limited initially. In Fall 1943 only 2 were deployed in France, yet this number increased to 11 divisions until June 1944. About 5 of these units were sufficiently equipped, but the 6 others lacked tanks and other equipment. In total there were about 1860 armored vehicles available at the time of the invasion. (Deutsche Reich & 2. WK: Band 7; S. 480-481)

The State of the Air Force and Navy

Before we take a look at the defense layout of an infantry division on the coast, some information about the overall state of the German Air Force and Navy on the Western front. The situation was dire and got worse, it was unable to provide proper defense against the continuous air strikes from the Allies. Furthermore, in May 1944 the Allies focused their bombing attacks on the German fuel production, which considerably limited the ability of the Luftwaffe in its mobility and training. In case of an invasion, it was planned to transfer several air units from other areas. Yet, still that would only bring the number of planes to a total of around 1650 operational aircraft. (Deutsche Reich & 2. WK: Band 7; S. 483-485) At the same time the Allies had more than 9000 aircraft available over Normandy. (Source: Wikipedia )

This air supremacy of the Allies also prevented almost any operations of the German Navy. Due to detection by enemy radar the German ships couldn’t leave the harbors without being faced with immediate air and naval attacks. Thus, deploying naval mines in a systematic fashion was not possible. There were German plans to mine the coastal regions in Normandy, but the Allies successfully prevented these operations. (Deutsche Reich & 2. WK: Band 7; S. 485-487)

Defense Layout for of an infantry divisions (348th Infantry Division)

Now, lets take a closer look at the defense layout of the coastal region that was defended by the 348th infantry division. It was a bodenständige Division, thus intended for a static defense. The coastal area defended by this unit was about 30 to 35 km in length. On the Northern flank the 344th Infantry division and on the Southern flank the 245th infantry division were deployed.

Infantry Regiment Deployment

The 348th consisted of two infantry regiments. One regiment defended the Northern region and the other the Southern region.
There are numerous emplacements and defensive positions. I don’ really have any clear information about them, but I assume most of them were fortified with concrete fortifications considering the amount of passive defenses.

Artillery Deployment

The southern region contained a company from a coastal artillery battalion or “Heeres-Küsten-Artillerie-Abteilung” and an army artillery battalion or “Heeres Artillerie-Abteilung”. As far as I know these battalions were not part of the division itself, which had its own artillery regiment. A total of 14 batteries of these units were deployed at the following positions. And furthermore, there were another three batteries for 10cm artillery pieces.

Passive defenses, mines and obstacles

Now there were various static defense and obstacles:
First off there were a “few” mine fields, yeah, well, now you know why they needed 6.5 million of those little bastards.
There were 4 areas that were protected by hedgehogs in front of them.
Another 5 areas that used ramming logs some of them are located in the water or directly on the beach area.
And finally one area was protected by an anti-tank wall, which was the location of one the headquarters units. So let’s take a closer look at those.

Headquarter units

The headquarters unit for one infantry regiment was located here at the anti-tank wall, which is located right behind the forward area of the defenses and also in well centered. The same goes for the second regiment headquarters in the South. At little bit more behind, but again in the center is the divisional headquarters located, which is also the position for the headquarters of the artillery regiment and the signal battalion.

Reserve Areas

Now there were 5 areas for reserves, 4 of divisional reserves and one regimental reserve. The only regimental reserve was located very close to the front line in the North. A little bit more behind was a divisional reserve area. Then there was a large reserve area next to the division headquarters, where a company of assault guns and an anti-tank platoon were deployed. There was another reserve area next to the division HQ and one in the Southern area close to the front line.

Conclusion

To summarize, the Atlantic Wall wasn’t an impenetrable defensive line nor was it just hollow propaganda. The quality and quantity of the defensive positions varied a lot and was closely related to the German Commanders assumed invasion location, which was not the Normandy. The strategic reserve to counter an invasion was deployed as a decentralized reaction force in combination with a centralized mobile force to perform counter-attacks.

Due to the Allied Air Superiority the German Air Force and Navy were basically incapable of providing any substantial contribution during the preparation against the invasion and the invasion itself. Furthermore, the constant air strikes severely reduced the amount of the available work force due to the need for repairs that couldn’t be spent on constructing fortifications and obstacles.

Sources

Books

Das Deutsche Reich und der Zweite Weltkrieg – Band 7: Das Deutsche Reich in der Defensive – Strategischer Luftkrieg in Europa, Krieg im Westen und in Ostasien 1943-1944/45 (amazon.de affiliate link)

Germany and the Second World War – Volume 7: The Strategic Air War in Europe and the War in the West and East Asia 1943–1944/5 (amazon.com affiliate link)

Fortress Europe: Hitler’s Atlantic Wall by George Forty (amazon.com affiliate link)

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Bernhard Kast is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.

Disclaimer amazon.co.uk

Bernhard Kast is a participant in the Amazon EU Associates Programme, an affiliate advertising programme designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.co.uk.

Disclaimer amazon.ca

Bernhard Kast is a participant in the Amazon.com.ca, Inc. Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.ca.

Disclaimer amazon.de

Bernhard Kast ist Teilnehmer des Partnerprogramms von Amazon Europe S.à.r.l. und Partner des Werbeprogramms, das zur Bereitstellung eines Mediums für Websites konzipiert wurde, mittels dessen durch die Platzierung von Werbeanzeigen und Links zu amazon.de Werbekostenerstattung verdient werden können.

Online Resources

Heeres-Küsten-Artillerie
Heeres-Artillerie-Abteilungen
348th Infantry Division

Arado Ar 234 – The First Jet Bomber and some special Variants

Intro

The Arado 234 was the first operational jet-powered bomber in the world. Only a little more than 200 were built, even less saw actual combat. Nevertheless, it earned its place in aviation history and is worshipped by some members of the War Thunder community as a deity.

The initial studies for the Arado 234 were started as early as late Fall 1940. Yet, these designs were focused on creating a medium-range recon aircraft not a jet-bomber. It should use jet engines that at that time were still in development. The planned aircraft should be immune to interception due to its operational altitude and speed. In 1941 one air-frame (E370) was selected and the designation Ar 234 was chosen. (Green Williams, Warplanes of the Third Reich: p. 49)

Basic Design

The design was a one seated air frame with a shoulder-mounted wing, it was a clean and simple design. The cockpit should be pressurized. The design provided an all-around view to the front, yet there was no view to the rear. Since a large part of the fuselage was used for fuel tanks and the thin wings didn’t provide sufficient storage space for a traditional undercarriage there were many different proposals to solve this issue. The system, which was selected was a take-off trolley that would be dropped shortly after take-off and in order to land a centrally-mounted skid with smaller skids was used.

This system was kinda odd, but what followed was probably even more odd. The air-frame was ready in Winter 1941, but the jet engines were still not ready for about 1 year. Thus, it was proposed to install piston engines, yet due to the low ground clearance this wasn’t possible. Yet, meanwhile nobody started to redesign the air frame in order to house a proper landing gear system or at least I couldn’t find any information about this. Because later on, it became obvious rather quickly that a landing gear was needed and the air frame was redesigned to create space for a landing gear mechanism. I am not sure if the landing skid oversight is hindsight bias, lack of sources, an engineering or political issue.

Series Overview

There were three different main series of the Arado. The A-Series which were the prototypes with the landing skid, the B-Series, which was an improved A-Series with landing gear and other improvements and finally the Ar 234 C Series, which had 4 jet-engines instead of 2, although of a different type.

Now the production numbers for these series vary widely, but take these values with a grain of salt, because prototypes and pre-production aircraft are sometimes counted and sometimes not, furthermore some C-Series planes were converted from the A-Series, thus there is probably some double-counting going on:

Around 7 A-Series prototypes were built, the B-Series saw 210 production aircraft and the C Series saw 10 prototypes and 14 pre-production and production types.(Green Williams, Warplanes of the Third Reich: p. 56) Thus, in total less than 250 planes were produced. These numbers are very low, in comparison around 1400 Me 262 were built, 6500 He-111 and 15 000 Ju 88. (and 34 000 Bf 109s.) (numbers from Wikipedia)

Now of these few hundred planes even less were operational at any given point in time, this was due to several factors like the unreliable engines that needed be overhauled after a few flight hours and had a very limited service life:

the short operational lifespan of the jet engines – rarely more than ten hours between [a] major overhaul – dictated the availability of the jet for combat.

(Source: p. 2 Sterling Michael Pavelec: The German Jet Program 1939-1945)

The reasons for this were that jet engines were a new technology, but this situation got more complicated due to the lack of rare materials, thus leading to the use of lesser quality substitutes and finally since fuel was also very limited often low-quality fuel was utilized.

Now let’s take a closer look at the different types:

Ar 234A Series

As mentioned before the original air frame was ready in late 1941, but due to the lack of engines and inability to use piston engines, it couldn’t be properly tested. It took more than a year for the first pre-production jet-engines to arrive in February 1943 (pre-production Jumo 004A). Yet, these engines weren’t cleared for flying, thus they were only used for taxying around the plane on the runway. Finally, after new engines arrived the first flight was performed in Mid-June 1943 (15th).

The main problem with the skids became apparent early on. The aircraft couldn’t be maneuvered after landing and had to be towed, which was problematic with cluttered airfields and especially due the threat of strafing attacks. (Green Williams, Warplanes of the Third Reich: p. 51) Furthermore, the parachute on the trolley usually didn’t work properly thus breaking it repeatedly. Hence, the plane was redesigned to add an undercarriage system into the fuselage. This lead to the Arado 234 B model.

Ar 234B Series Blitz

Which had its maiden flight as a prototype (the Ar 234 V9) in March 1944. In June 1944 the first pre-production flight of the Ar 234B-0 was performed. Another prototype was equipped with a periscope bomb sight and bomb shackles for bombing trials. Some planes were also equipped with a landing chutes and so called “Rauchgeräte” literally meaning “smoke devices”, which were rockets that assisted in take-offs. (Green Williams, Warplanes of the Third Reich p. 51-53)
Pre-Production planes were tested and in one flight Mach 0.86 was achieved, but it is not sure if this is correct, because compressibility effects normally began to manifest themselves in the vicinity of Mach 0.78. (Green Williams, Warplanes of the Third Reich p. 51)

The two main version of the B Series were the Ar234B-1 and the Ar234B-2. The Ar234B-1 was a simple recon version. Whereas the Ar 234B-2 was more versatile and suitable for bombing, pathfinding and photographic recon. There were many different modifications and systems that were fitted on some planes like special recon equipment, drop tanks and bomb sights. There was a bomb sight for level bombing, but also a bombing system that allowed for glide and shallow dive-bombing. (Green Williams, Warplanes of the Third Reich p. 53)

Operational History

The B-Series aircraft were the only once that were used on the front line, yet due their limited number and the fuel situation they had very little to no influence beyond the tactical level. Hence, the operational history will be rather short.

The very first units flew recon missions above British East Coast harbors in order to determine if an invasion of the Netherlands was being prepared. (Green Williams, Warplanes of the Third Reich p. 53) Some units of the Kampfgeschwader 76 flew bombing missions during the Ardennes Offensive in late 1944 and early 1945. Furthermore, in March 1945 several missions in combination with Me 262 were flown against the Rhine bridge at Remagen, which was captured intact by US forces earlier on. Yet, these attacks were without success. A few planes were also used for recon missions in Northern Italy. The last planes were basically grounded due to a lack of fuel.(Green Williams, Warplanes of the Third Reich p. 54-55)

Ar 234C Series

Now, the intended follow up for the B-Series was the C-Series. The air-frame of the Ar 234 was strong enough to withstand considerably more power than two Jumo 004B engines could provide. (Green Williams, Warplanes of the Third Reich: p. 55) Thus it was proposed to create a variant that used 4 BMW 003A turbojets that were smaller and lighter. The first trials began in February 1944 and used airframes from the Ar 234 A variant (Ar 234 V8; Ar234 V6 followed in April 1944). One version used four engines in two nacelles (Ar 234 V8), whereas another used 4 engines in 4 individual nacelles (Ar 234 V8), the first version proved be more suitable and was adapted for the Ar 234 C series. There were several modifications in the C Series that differed from the B Series, most notably a redesigned cockpit, cabin, skin re-contouring, aileron design and an enlarged nose wheel. (Green Williams, Warplanes of the Third Reich: p. 56) Yet, only pre-production aircraft were produced. There were around 8 sub variants planned and developed, which delayed the overall process. The first five variants were the:

  • Ar 234C-1: a recon plane, with camera and 2 aft-firing MG151.
  • Ar 234C-2: a bomber variant, intended to use 1×1000 kg bomb and 2x 500kg bombs and probably the best known variant due to War Thunder the
  • Ar 234C-3: a multipurpose variant that could be used as a bomber, ground attack or night fighter, armed with 2 forward firing MG151 and 2 aft-firing MG151.
  • Ar 234C-4: BMW 003C powered recon
  • Ar 234C-5: two seat bomber, with bombardier and navigator

Size & Dimension

Time to take a look at the size and dimensions of the Arado 234. In overall the dimension of the different series were very similar or unchanged, for instance the wingspan and horizontal stabilizer didn’t change at all and length only increased by less than half a meter between the A and the C Series. Since, the B Series saw the most action, here are the dimensions for Arado 234 B-1 according to the drawings from the 6th of December 1944 by the “Entwurfsabteilung” which means design department in English. For scale there is a figure with a height of 1.8 m.
The Arado had a length of 12.62 m, a wingspan of 14.4m, the distance between the highest point of the rudder and the lowest of the undercarriage was 4.28 m and the horizontal stabilizer was 5 m wide. Now these absolute measures more or less intuitive.

Dimensions for all 3 Series

Arado 234-A (according to the drawing from 13th July 1943)

Length: 12.58 m (41.3 ft)
Wingspan: 14.2 m (46.6 ft)
Height (from top to the bottom of the extended skid): 3.75 m (12.3 ft)
Wingspan horizontal stabilizer: 5 m (16.4 ft)

Arado 234 B-1 (according to the drawing from 6th December 1944, Entwurfsabteilung; S. 21)

Length: 12.62 m (41.4 ft)
Wingspan: 14.4 m (47.2 ft)
Height (from top to the bottom of the undercarriage): 4.28 m (14.0 ft)
Wingspan horizontal stabilizer: 5 m (16.4 ft)

Arado 234 C- 3 mit 4xBMW 109003 A1 (according to the drawing from 9th September 1944, Entwurfsabteilung; S. 28)

Length: 12.84 m (42.1 ft)
Wingspan: 14.4 m (47.2 ft)
Height (from top to the bottom of the undercarriage): 4.15 m (13.6 ft)
Wingspan horizontal stabilizer: 5 m (16.4 ft)

Comparison to Bf109 and He111

So let’s take a look how they compare to other planes.
The Bf109 had a length of around 9m, the He 111 was almost 4 meters longer than the Arado with it’s 12.6 m, as you can see the Arado is even small for German medium bombers. In contrast a a B-17 G was about 22.7m (22.66m) in length although this should only give you an indication on the size difference, because both planes were designed with completely different concepts in mind.

Technical Specification

Now let’s take a look at the performance and weapon loadout, as noted before the Arado 234 was designed primarily as a recon plane, it was later fitted with bombs, but those were mounted outside and thus created drag. Yet, considering the small size of the plane the maximum bomb load was not too bad with 1500 kg, in comparison the He-111 could carry up to 2000 kg in its internal bomb bays.
(Values for the Ar 234B-2 according to Green Williams: Warplanes of the Third Reich, p. 55)

The maximum speed at an altitude of 6000 m (19500 ft) was 742 km/h – 461 mph
At an altitude of 10000m (32800 ft) it was 700 km/h – 435 mph
It’s Range without bombload was 1630 km and with bombs around 1550 km
Range: 1630 km – 1013 Miles
Range with bombs: 1556 km – 967 Miles

The overall flight performance of the Arado was very well perceived by its pilots. It was a highly maneuverable plane and handled well at speeds below 900 km/h (560 mph), thus the handling was only problematic during dives. At that speed the plane became nose-heavy and the elevators sloppy, thus maintaining a straight dive could be problematic. (Green Williams: Warplanes of the Third Reich, p. 55) The major problem was the reliability of the engines, which also could flameout during flight and under certain circumstances not be restarted again. (Green Williams: Warplanes of the Third Reich, p. 55)
The major problem was the reliability of the engines, which required frequent overhauls. Also if an engine flamed-out it could only restarted below 4000 m and a speed between 400 km/h (250 mph) and 500 km/h (310 mph). Above these values relighting was not possible. (Green Williams: Warplanes of the Third Reich, p. 55)

Interesting Variants

Now, I got my hands on a book full of Arado documents and there were many interesting variants in it, some, which never left the drawing board, but are nevertheless interesting so let’s have a look.

Early Fighter Variant

The first that caught my attention was a basic drawing dated to the 22nd of May 1943. (S. 14-15) It is a fighter Variant of the Arado. It has a different nose configuration, which should have included armor plates to protect the pilot from the front, since the regular version only had an armor plate in the back. Furthermore, it was proposed to equip it with 3x30mm Mk 108 machine cannons and 4x20mm MG151 machine cannons. Whereas 2 of them would be aimed backwards.
It seems that this early fighter variant served as a foundation for the propsed Night Fighter Variant the Ar 234P. (Green Williams, Warplanes of the Third Reich: p. 58)
Now, you might think that the Arado would be not a good fighter, but well, there is a report from from Mid-June 1944 about various flight demonstrations of German and captured Allied aircraft. Due to the agility of the Arado, the State Secretary of the Aviation Ministry (Erhard Milch) wanted to see a comparison between the turning performance of the Ar 264 and the Me 262. To quote from the report:

It showed the clear superiority of the Ar 234 in a turn fight; Ar 234 V10 had the 262 several times in front of its barrels. The Me 262 yet was able to run away during disengagements.

(Report about the Exhibition of the Ar 234 in Rechlin 12th & 13th June 1944 – Source: Arado Ar 234 – Eine Dokumentation, Band 1; Karl R. Pawlas, 1976, S. 157)

Dieser zeigte die eindeutige Überlegenheit der Ar 234 im Kurvenkampf; Ar 234 V10 hatte die 262 mehrfach vor den Rohren. Die Me 262 konnte jedoch bei Absetzbewegungen davonlaufen.

(Bericht über Vorführung Ar 234 in Rechlin am 12. u. 13.6.1944 – Source: Arado Ar 234 – Eine Dokumentation, Band 1; Karl R. Pawlas, 1976, S. 157)

I will probably do a short video and transcript on the full report, because it contains some interesting views of the Germans on their own and Allied planes. Furthermore, it would be an interesting idea for a War Thunder reenactment, because many planes are actually available in the game already.

Anti-Escort Variant

There was another proposed version that was title “Jagdeinsatz gegen Begleitschutzjäger – 16.12.1944 Entwurfsabteilung” which roughly means “Deployment against Escort-Fighters”. It included a sketch and also a chart with the altitude and speed for the P-38 Lightning, P-47 Thunderbolt and P-51 Mustang. It is dated for Mid-December 1944 and was one of the many subvariants for the Arado 234 C Series. It should have been equipped with 3 so called “Magirus Bombs”, which were gun pods with 2×20 mm MG151 machine gun cannons. One under the fuselage and one under each engine, similar to the bomb layout.(S. 37) The weight for such a gun pod with 2xMG151 with 200 shots per barrel is given with 230 kg (507 lbs). (Since there is a bomb loadout with 3×250 kg for the Arado 234 C3 in War Thunder you could try out the basic flight performance.) These gun pods would probably be a very interesting variant for War Thunder.
Now, there is also a protocol from a meeting held about 6 months earlier in June 1944, just a few days before D-Day. Which clearly states that the Ar 234 C could be equipped with 3 Magirus bombs and used a “Hilfsjäger” support-fighter, but there is no interest in such an arrangement. Although it is noted in the paragraph below that an Ar 234 C should be equipped with an armored and pressurized cabin to be used as a high-altitude fighter “Höhenjäger” with 2xMG151 (S. 141). Hence, the Anti-Escort variant was probably the high-altitude fighter variant with additional gun pods.

Conclusion

Although the Arado 234 was initially designed to be a recon plane it was successfully adopted as a jet bomber and probably would have been also successful as a night-fighter and maybe even as a day-fighter. In this regards it is similar to other German medium bombers like the Do 217 and Ju 88, which also served as night fighters. Considering that it was the first of its kind, it definitely performed very well besides the engine reliability, which was also heavily influenced by the desperate state of German resources that late in the war.
Today, there is only one surviving Arado 234 left, which is owned by the Smithsonian National Air and Space Museum. Right now, it seems to be located at the Steven F. Udvar-Havy Center in Chantilly, Virginia, but better check the link to be sure.

Sources

Books & Theses

William Green: The Warplanes of the Third Reich (amazon.com affiliate link)

Karl R. Pawlas: Arado Ar 234 – Eine Dokumentation, Band 1; 1976 (amazon.de affiliate link)

Sterling Michael Pavelec: The German Jet Program 1939-1945 (Master thesis, free to download)

amazon.com amazon.co.uk amazon.ca amazon.de

Disclaimer amazon.com

Bernhard Kast is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.

Disclaimer amazon.co.uk

Bernhard Kast is a participant in the Amazon EU Associates Programme, an affiliate advertising programme designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.co.uk.

Disclaimer amazon.ca

Bernhard Kast is a participant in the Amazon.com.ca, Inc. Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.ca.

Disclaimer amazon.de

Bernhard Kast ist Teilnehmer des Partnerprogramms von Amazon Europe S.à.r.l. und Partner des Werbeprogramms, das zur Bereitstellung eines Mediums für Websites konzipiert wurde, mittels dessen durch die Platzierung von Werbeanzeigen und Links zu amazon.de Werbekostenerstattung verdient werden können.

Online Resources

Airvectors Arado 234 Article

Aviation History Arado 234 Article

Arado 234 at the Smithsonian National Air and Space Museum

Battle Of Britain – The Fighting & Balance of Force

Intro – Fuzziness: Phases & Geography

The Battle of Britain is like a cuddly toy, it is popular, everybody wants to touch it and it’s very fuzzy.
Or as professor Overy put it:

“Most battles have a clear shape to them. They start on a particular day, they are fought on a geographically defined ground, they end at a recognizable moment, usually with the defeat of one protagonist or the other. None of these things can be said of the Battle of Britain.”

The geography of the Battle of Britain is wide and fuzzy, due to several reasons. First, the German attacks were flown against various targets like ships, economic targets and airfields. Second, the RAF also flew attacks against German shipping, industry and harbors. And third, it is often neglected that the Royal Navy, Kriegsmarine, Bomber and Coastal Command were also involved, after all the Battle of Britain was seen by both sides as a prelude to the Invasion of Great Britain. Thus, it would be a quite limited view to just think about Fighter Command and the Luftwaffe fighting above England.

Balance of Force – Aircraft & Wrong Estimates

Let’s take a look at the overall balance of force or probably more interesting the overall perception of force based on estimates.
Both sides usually had wrong or completely wrong estimates on the other side’s capabilities and amount of operational planes and/or destroyed throughout the whole battle.
Now to get a proper force estimation you need basically three numbers:

  1. The initial strength
  2. The number of replacements
  3. The number of losses

The British got the first, second and third number wrong. Whereas the Germans got the second and third number wrong. At first, you might think, well the Germans were less wrong so they should have made better assumptions, well no, because they were wrong in the wrong way. They underestimated the replacement output of the British, whereas the British overestimated the replacement output of the Germans. So let’s take a look at the numbers

Strength Estimates

Now, for the initial strength the Luftwaffe got their estimate in Mid July 1940 close on for the total number of British Fighters and the operational ones with 900 and 675 operational, since in August the Fighter Command had around 700 operational planes.
In contrast to the British estimate of the front line strength of the Luftwaffe at around 5800 aircraft in August 1940, whereas the frontline strength for the Luftwaffe in September was about 3000 planes with 2000 operational, with about 1700 aircraft used against Britain.

Production Estimates

Now, in terms of production
The British assumed the German aircraft output was around 2000 planes per month, whereas the Germans estimated that British industry could produce 200 fighters per month.
Well, the real numbers were quite different, the Germans on average could only produce 1000 planes, whereas the British produced a bit more than 400 fighters per month.
So basically, both sides got the production numbers wrong by a factor of at least 2x times, just in different directions.

Kill estimates

Now in terms of reported kills both sides also got highly inflated kill numbers, but since the British overestimated all German numbers this number actually corrected their estimates in the correct direction, whereas due to the German underestimation of British production this lead to a very wrong number.
As a result, the Germans assumed to fight a way smaller force than they actually did, which lead to flawed strategic decisions, because it was often assumed that Fighter Command was beaten, thus switching to new stage in a plan that was missing the prerequisite stage.
Around spring 1941 those estimates finally approached reality.

The Battle of Britain is usually divided into four phases. Of course the exact dates of those differ a bit.

Phase 1 – Foreplay

The first phase of the Battle was in June and July, it was used by both sides to learn and adapt. The German operations were in a way armed recon combined with hit and run attacks. The amount of bomber aircraft was limited, whereas a large amount of fighter were used. During the day the area of operation was mostly the British coastline, yet during night targets all over Britain were attacked.

The British adapted their approach and only sent a small amount of fighters against attacks, in case they were just diversions. The improved their tactics, coordination and communication.
The Germans learned that their bombers needed escort since Fighter Command prioritized bombers. Which meant that they had to give up flexibility one of their strongest advantages, since German fighter pilots were mostly trained in free-roaming hunting mission.

Phase 2 – Attack on Fighter Command

The second phase began around Mid August 1940.
Now, the German attacks focused on destroying the British fighters and airfields. For about 4 weeks the German started around 50 main attacks against airfields, yet only about 30 of those were fighter airfields. Additionally, there were around 1000 small raids against other targets like industry, supplies and communications, whereas there were only 6 major raids against radar installations.

The attack on the airfields were of limited success, some were put out of operations for several days or nights in total, whereas by end of August German Air Intelligence assumed that at least 8 airfields were completely knocked out and many others badly damaged. This was clearly not the case, since no airfield was permanently put out of action.
Fighter Command adapted and used squadrons to protect important airfields, whereas others attacked the raids. Hurricanes were usually used against bombers, whereas Spitfires were used to attack enemy fighters.

The British defense system described in my earlier video was probably never really understood by the Germans, they assumed the British were fighting a decentralized battle, where each airfield fought for its own. This was probably the reason, why there was no systematic attack on radar installations. Furthermore, the Germans overestimated the amount of damage they inflicted against fighters or installations. They assumed that in August about 50 % of the British fighters were destroyed. In early September it was reported to Göring that the Fighter Command had only about 100 operational fighters left.

Well, the real numbers were a bit off, if you define the difference of 600 fighters as a bit.
Yet, the heavy fighting took a toll on both sides.

During the time period from 6 August to 2 September the Fighter Command lost 440 fighter planes. Whereas the Germans lost 440 in the shorter period from 8th August to 31st of August. Additionally the lost another 460 aircraft.

Due to the extensive fighting the Luftwaffe and the Fighter Command showed signs of exhaustion.

Yet, in early September came the switch to attack primarily London, which removed pressure from Fighter command. This decision is actually almost uniformly seen as the beginning of the third phase.
Now this decision is usually regarded as a revenge attack for the bombing of Berlin. This assumptions seems to be wrong, first the attacks are often solely attributed to Hitler, but as Overy puts it: “The decision to launch attacks on London rested with Hitler, but all the preparation was in place long before.” Second, London was already bombed before the bombings on Berlin.

Phase 3 – 7th Sep. – Nailing one spot

The attack on London was problematic for the Luftwaffe. The fighters were operating at the limits of their range. The losses from the previous weeks of heavy fighting were extensive and Göring ordered the fighters to fly not above the bombers anymore, but directly with them, which lessened their flexibility even more. Due to the high losses, main bombing attacks switched gradually to night bombing.

For the London attacks the Luftwaffe attacked from a higher altitude, this presented several problems for the RAF. First Radar was less accurate and second their fighters usually couldn’t get above the German planes, which was the ideal attack positions. To adapt to this situation fighters were given more time to assemble and Spitfires were flying high altitude patrols.
The losses for the Luftwaffe were high, in the first week the Germans almost 200 bombers and 100 fighters. Whereas the RAF lost 120 fighters. The losses continued to be high and after about 10 days the Luftwaffe switched to night-time attacks.

Although the invasion of England was called off the Battle of Britain wasn’t over, the air attacks on Great Britain were continued and around October 1940 it entered the fourth and final phase.

Phase 4 – Outro

This phase consisted mostly of night bombings by bombers and large daylight fighter operations.
The night bombings could only be engaged by anti-aircraft fire and thus the losses were minor, after October the German losses were to 50 % from accidents related to weather conditions.
The daylight operations were performed with fighter-bombers that were heavily escorted. The goal was to finish off the British defenses, which only made sense due to the complete wrong estimations of German Air Intelligence. Yet, these attacks were flown at high altitudes were the Bf 109 had a performance advantages thus the loss ratio of the Fighter Command was increasing, but it was too late and too little. Finally in November the daylight operations faded away and the Battle of Britain was over.

The course of the battle can be represented in numerous ways, probably the easiest way to demonstrate the continuous shift is by showing the shift in the number of fighter pilots.

Balance of Force – Pilots

This clearly shows that the notion of “the few” against “many” may be a bit off. But the notion itself isn’t completely incorrect, it is just a matter of perspective. Because 1) these are only the numbers for fighter pilots and 2) the Fighter Command usually engaged first with a small group of fighters. Thus a small group of British fighter often met a big German air group.
This is a good reminder that the small picture is often more intriguing, but the big picture is usually closer to the truth. Or to put it another way, it is hard to analyze a war while you are sitting in a trench or a cockpit for that matter.

Sources

Books

Overy, Richard: The Battle of Britain – The Myth and the Reality (amazon.com affiliate link)

Maier, Klaus A.: Die Luftschlacht über England in: Michalka, Wolfgang (Hrsg.): Der Zweite Weltkrieg (amazon.de affiliate link)

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Bernhard Kast is a participant in the Amazon EU Associates Programme, an affiliate advertising programme designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.co.uk.

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Bernhard Kast is a participant in the Amazon.com.ca, Inc. Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.ca.

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Bernhard Kast ist Teilnehmer des Partnerprogramms von Amazon Europe S.à.r.l. und Partner des Werbeprogramms, das zur Bereitstellung eines Mediums für Websites konzipiert wurde, mittels dessen durch die Platzierung von Werbeanzeigen und Links zu amazon.de Werbekostenerstattung verdient werden können.

Online Resources

The RAF Fighter Control System

RAF Museum – Background Battle of Britain

Never was so much owed by so many to so few

Notes on Accuracy & „Methodology“

(1) Almost all numbers are from Overy: The Battle of Britain (see sources).
(2) Estimates and actual numbers are often from different time, they are intended to show how off the estimates were NOT the actual balance of force.
(3) Most numbers are rounded.
(4) The composition of plane-types in the visualization is not accurate except when it is explicitly a number stated fort that type of aircraft.

British Infantry Division 1914/1916 – Visualization – Organization & Structure

Basic Numbers of a 1914 British Infantry Division

In 1914 a British infantry division consisted of about 18100 (18073) men. The division was equipped with 5600 (5592) horses. 24 Machine guns, 54 18 pounder field guns, 18 4.5 in howitzers and 4 60 pounder heavy field guns. (Source: Richard Rinaldi: Order of Battle of the British Army 1914 and others see links below)

Organization of 1914 Division

Now in terms of organization and structure, the division in 1914 consisted of 3 Infantry brigades, which themselves consisted of 4 Infantry battalions each, which consisted of themselves of 4 rifle companies and 1 MG Section each. Furthermore, the division had one cavalry squadron for recon, one signal company, 3 field ambulances, 2 Field Companies of Royal Engineers, 3 Brigades of the Royal Field Artillery each with 3 Batteries, one Brigade of Field Artillery with 3 Howitzer Batteries and finally one Heavy Battery of the Royal Garrison Artillery.

Now, you probably noticed there are no regiments in this structure, and in case of the artillery, there are also no battalions. Furthermore the number of Artillery Brigades is 4, in contrast a German Infantry Division in 1914 had only 1 Artillery Brigade. Yet, those 4 British Brigades have a total of only 72 guns, which is exactly the same number as the German Brigade, which had 4 Battalions. So basically, a British Artillery Brigade is about the same as a German Artillery Battalion in 1914. Now, let’s take a closer look at one of the three Royal Field Artillery Brigades.

Royal Field Artillery Brigade

Such a Brigade consisted of three Batteries, each of this batteries had 6 18 pounder field guns. In total the Brigade consisted of 772 Men, 23 Officers and 748 Horses. Yet, the mainstay of an infantry divisions are always the infantry or rifle companies, so let’s take a look at those.

Rifle Company comparison with German Infantry Company

Each rifle company consisted of 227 Men and in total there were 48 Infantry Companies, which means that almost 11000 (10896) men of the 18100 (18073) served in the Rifle Companies. Similar to the number of artillery pieces in a German Infantry Division from 1914, the number infantry companies was also 48. Yet, a German company had 270 men. Although the total number of men in both division layouts was almost exactly the same, the German division had an additional 2000 men more serving in infantry companies than the British.

Organization in 1916

During the war there were many reorganizations in terms of the division layout. Let’s take a look at original 1914 layout and see what had changed til September 1916. The cavalry squadron, the MG section and the Royal Garrison Artillery Battery had been removed. Meanwhile one additional Engineer Company was added, furthermore, each infantry brigade had now one MG Company and one Light Mortar Battery attached. Additionally, there was one Battalion of Pioneers, 3 Batteries of Medium Mortars and one Battery of Heavy Mortars added. Which is similar to the German developments that also increased the number of machine guns and added mortars to their infantry divisions.

Accuracy

Now, take all these values with a grain of salt, because usually every division was a bit different even without considering combat losses. Furthermore, I combined several different sources here and the author of my main source notes the following: “However, the number of discrepancies among the sources is amazing; even two official history volumes give different numbers for a Regular infantry division in 1914.” (-Richard A. Rinaldi: Order of Battle of the British Army 1914, p. 432)

Related

German Infantry Division 1914/18 – Visualization – Organization & Structure

Infographic – German Infantry Division 1914/1918 – Organization, Structure & Numbers

Sources

Books

Richard A. Rinaldi: Order of Battle of the British Army 1914 (amazon.com affiliate link)

Bruce Gudmundsson: The British Expeditionary Force 1914-15 (amazon.com affiliate link)

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Bernhard Kast is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.

Disclaimer amazon.co.uk

Bernhard Kast is a participant in the Amazon EU Associates Programme, an affiliate advertising programme designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.co.uk.

Disclaimer amazon.ca

Bernhard Kast is a participant in the Amazon.com.ca, Inc. Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.ca.

Disclaimer amazon.de

Bernhard Kast ist Teilnehmer des Partnerprogramms von Amazon Europe S.à.r.l. und Partner des Werbeprogramms, das zur Bereitstellung eines Mediums für Websites konzipiert wurde, mittels dessen durch die Platzierung von Werbeanzeigen und Links zu amazon.de Werbekostenerstattung verdient werden können.

Online Resources

Nafziger Collection

British Army WW1 – Organization (Wikipedia)

Yorktown vs. Shokaku class Carriers – USS Enterprise vs. IJN Zuikaku

Intro

In Mid 1942 two of the most modern aircraft carriers in the US Navy and Imperial Japanese Navy were the USS Enterprise and the HIJMS Zuikaku. So let’s take a look their dimensions, defensive capabilities and aircraft loadout.

Dimensions

The length for the Enterprise was 251 m or 824 feet, whereas the Zuikaku was 257 m or 845 feet long.
Looking at the overall dimensions, one would assume that USS Enterprise would be about the weight of Zuikaku, but according to various sources this wasn’t the case at all. Most values differ, but all sources have one thing in common. Namely, that the displacement of the Zuikaku is significantly higher than that of the Enterprise. Since I couldn’t find a proper explanation, I started asking questions and thanks to several people mentioned in the description, here are the answers.

One aspect to consider is that the Enterprise was built under treaty regulations and the Zuikaku wasn’t, so the values of the Enterprise are probably a higher than on the official records.
But lies are only one part of the story, additionally, there were clear difference in terms of construction and equipment.
First, The Enterprise had a welded hull which is lighter than the riveted hull of the Shokaku class.
Second, the Yorktown class had only one hangar and it was an open hangar, which requires less weight.
Third, the Enterprise was less armored and had a weaker under-water protection.
Fourth, the Zuikaku had considerable more horsepower, which requires bigger and stronger machinery.
These are the main factors that contribute to the considerable higher displacement of the Zuikaku.

Anti-Aircraft Armament

Now, in terms of anti-aircraft weaponry in June 1942, the Enterprise had 8 5 inch, 4 quad 1.1 inch and 30 20mm guns. The Zuikaka had 16 5 inch guns and 12 triple 25 mm guns.
One way to compare the AA defense is with some simple math. Let’s take the effective rate of fire multiply it with the weight of the shell and with number of guns. Then sum it all up and we get around 6000 kg per minute for the Enterprise and 4000 kg for the Zuikaku. So every minute the Enterprise could throw a Panzerkampfwagen I at you, whereas the Zuikaku could only manage a light Scout Car.

Besides putting out one third less stopping weight than the Enterprise, the Zuikaku had another problem the tracking speed and fire control systems of Japanese guns were inferior, especially for the 25mm guns. Thus, the effectiveness of those shots put into the air was considerable less than that of the USS Enterprise. This significantly lowered the defensive capabilities of the Shokaku class.

Radar

The Shokaku class carriers originally had no radar, both ships were later equipped with radars but that was after the battle of Midway. The lack of radar was major weakness, because the only way to detect enemy aircraft was with optics and the Mark I Eyeball. Since Japanese Aircraft (Stille: p. 9) radios were of low quality often no proper warning could be given by or to Combat Air Patrols in order to provide a coordinated defense.

In contrast the Enterprise was equipped with a radar that could detect small aircraft at about 3000 m altitude at a range of about 90 kilometers or 55 miles.

Armor

In terms of passive defense the Shokaku class carriers were better equipped than the Yorktown class carriers. The maximum value of Zuikaku’s belt armor was about 6.5in whereas the Enterprise had a maximum of 4 inch. The same for the deck armor with a maximum of 2.6 inches vs. 1.5 inch of the Enterprise. Furthermore, the Shokaku class featured a more sophisticated torpedo protection system than the Yorktown class carriers.

Aircraft Loadout

The Aircraft loadouts are for the Battle of Midway for Enterprise in June 1942 and for Pearl Harbor for the Zuikaku in December 1941, because the Zuikaku nor the Shokaku were present at the Battle of Midway. But the order of battle for the Japanese squadrons was similar.
In terms of fighter, the Zuikaku had 15 A6M2 Zeros and the Enterprise had 27 F4F Wildcats.
The Zuikaku had 27 B5N2 Kates, whereas the Enterprise had only 14 TBD Devastator Torpedo bombers. The Zuikaku again fielded the 27 planes for the dive bomber force, in contrast to the 38 SBD Dauntlesses of the Enterprise.

In total the Zuikaku had 69 operational aircraft and the Enterprise 79. Yet, the Zuikaku had another 12 spare aircraft in storage that could be made operational. Thus increasing the total number to 82 aircraft while the maximum load was 84 aircraft. But the Enterprise also had less than her maximum loadout of 90 aircraft.

Now, there are two interesting aspects here:
First, the total number of planes of the Enterprise is higher than that of the Zuikaku, although the Zuikaku had two hangars.
Second, there is a significant higher amount of dive bombers on the American side.
Why was that the case?

The US and Japanese approach towards storing and servicing aircraft was different the US used a so-called deck park. As a result the US carriers used the Hangar space and the flight deck to store planes, whereas the Japanese were limited to the hangar space.

Now, why were there so many more dive bombers on the US side?
This is due three reasons, first the US Navy assumed that Torpedo bombers were inferior and kept them mainly for attacking Battleships. Second, the US Navy thought that a dive bomber attack is better suited for limiting flight operations of an enemy carrier. And third, the US doctrine lay an emphasis on carrier based scout bombers, which could also be used as normal dive bomber. In contrast the Japanese used scout planes from Cruisers and Battleships to perform recon.

Conclusion

To conclude, the biggest drawback of Japanese carriers lay in their limited defense capabilities, due the lack of radar, inferior AA guns and weak fire control. Whereas the US Navy increased the number of fighters early on to strengthen further their active defense, the Japanese didn’t, thus widening the gap.
Nevertheless, the Shokaku class carriers were good or even great carriers, but against an enemy that constantly and quickly adapted a small flaw can become a major flaw in a short amount of time. After all the best weapon, tactic or strategy can be outclassed with proper counters. In war as in life nothing stays static for too long.

Sources

Books

Stille, Mark: US Navy Aircraft Carriers 1922-45. Prewar Classes (amazon.com affiliate link)

Stille, Mark: Imperial Japanese Navy Aircraft Carriers 1921-45 (amazon.com affiliate link)

USN Carriers VS IJN Carriers – The Pacific 1942 (amazon.com affiliate link)

Smith, Douglas V.: Carrier Battles – Command Decision in Harm’s Way (amazon.com affiliate link)

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Disclaimer amazon.com

Bernhard Kast is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.

Disclaimer amazon.co.uk

Bernhard Kast is a participant in the Amazon EU Associates Programme, an affiliate advertising programme designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.co.uk.

Disclaimer amazon.ca

Bernhard Kast is a participant in the Amazon.com.ca, Inc. Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.ca.

Disclaimer amazon.de

Bernhard Kast ist Teilnehmer des Partnerprogramms von Amazon Europe S.à.r.l. und Partner des Werbeprogramms, das zur Bereitstellung eines Mediums für Websites konzipiert wurde, mittels dessen durch die Platzierung von Werbeanzeigen und Links zu amazon.de Werbekostenerstattung verdient werden können.

Online Resources

Wildenberg, Thomas: Midway – Sheer Luck or Better Doctrine?
Note: That quite some assumptions in this article are dated, see here.

Ask Historians – Why were American carriers so much more durable

Enterprise (in)correct length

Midway Order of Battle

USS Enterprise CV-6

Yorktown Class Carrier

Shokaku Class Aircraft Carrier

Zuikakua Carrier

Various sites about the USS Enterprise:
Big E

CV 6

Enterprise CV 6

The USS Enterprise

Notes on Accuracy & “Methodology”

(1) To put it simply, when it comes to data about WW2 ships everything seems to be a bit off. Many sources differ all the time. I have like 3 different crew values for the USS Enterprise, basically every book, website and Wikipedia has one or several different values.

(2) Furthermore, thanks to various commenters on reddit and the paradox forums I know that this is very common. Also there seems to be an error on the length of the Enterprise according to this very well illustrated and sourced forum post: Calling all USS Yorktown CV-5 fans

(3) The same goes for articles (see sources Wildenberg and reddit comments on it).

(4) So, I tried to use only one source for each value in order to keep the data as clean as possible, also I did some cross-referencing, but since most experts seem to disagree take everything with a grain of salt, when it comes to displacement, dimensions and crew members.

(5) Values and equipment is from Mid 1942 or before. Zuikakus plane loadout is from the attack on Pearl Harbor, because she and the Shokaku were not present at the Battle of Miday. Note that especially the AA loadout changed considerable several times, in the end the Zuikaku had 96 25mm AA barrels and the Enterprise was equipped with 40mm bofors.

(6) The Aircraft loadouts are for the Battle of Midway for Enterprise in June 1942 and for Pearl Harbor for the Zuikaku in December 1941, since the Zuikaku nor the Shokaku were present at the Battle of Midway. But I took at the order of battle and there was no major change in Japanese setup.

(7) Mid 1942 is also the general “cut-off date”, thus proximity fuses, Japanese deck parks, etc. are not taken into account.

(8) There is a lot of wrong or dated information out there.