A fascinating insight into how the Allies learned about the capabilities and limitations of the Imperial Japanese Naval Air Force and Japanese Army Air Force through flight testing and evaluation of enemy equipment.In the Pacific War's early years, Japanese air power was dominant. The only way for the Allies to defeat their enemy was to know it. This made the task of maintaining productive intelligence gathering efforts on Japan imperative.Establishing Tech...

In 1938, the Yokosuka Naval Air Technical Arsenal, acting under the requirements issued by the Kaigun Koku Hombu for a Navy Experimental 13-Shi Carrier Borne specification for a dive-bomber to replace the venerable 'Val' aboard carriers.The resulting D4Y Suisei ('Comet'), codenamed 'Judy' by the Allies, was initially powered by a licence-built German Daimler-Benz DB 601 inline engine as used in the Bf 109E. Despite making an inauspicious combat debut durin...

Entering service during the Sino-Japanese War, the Nakajima B5N (code-named 'Kate') excelled and went on to achieve surprising and dramatic successes in the Japanese attack on Pearl Harbor.It also contributed to the sinking of the US aircraft carriers USS Lexington at the Battle of the Coral Sea, USS Yorktown at the Battle of Midway, and USS Hornet at the Battle of the Santa Cruz Islands. Its replacement, the Nakajima B6N 'Jill', while a ...