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But decrypted Purple traffic was valuable militarily, particularly reports from Nazi Germany by Japanese diplomats and military and naval attachés. Arlington Hall had delayed study of the Army codes until 1942 because of the "high payoff" from diplomatic codes, but were not successful with Army codes until 1943. [18]
The Instructions for the Battlefield (Kyūjitai: 戰陣訓; Shinjitai: 戦陣訓, Senjinkun, Japanese pronunciation: [se̞nʑiŋkũ͍ɴ]) was a pocket-sized military code issued to soldiers in the Imperial Japanese forces on 8 January 1941 in the name of then-War Minister Hideki Tojo. [1] It was in use at the outbreak of the Pacific War.
A cipher machine developed for Japanese naval attaché ciphers, similar to JADE. It was not used extensively, [5] [6] but Vice Admiral Katsuo Abe, a Japanese representative to the Axis Tripartite Military Commission, passed considerable information about German deployments in CORAL, intelligence "essential for Allied military decision making in the European Theater."
Tsūshōgō (通称号) were unit code names used by the Imperial Japanese Army (IJA) during World War II. Each tsūshōgō consisted of a "Unit Character Code" (兵団文字符, Heidan Mojifu) and a "Code Number" (通称番号, tsūshō bangō).
The Japanese military aircraft designation systems for the Imperial period (pre-1945) had multiple designation systems for each armed service. This led to the Allies' use of code names during World War II, and these code names are still better known in English-language texts than the real Japanese names for the aircraft.
The symbols below represent the ranks of the Japan Self-Defence Forces: the Japan Ground Self-Defence Force, the Japan Air Self-Defence Force, and the Japan Maritime Self-Defence Force, which replaced the imperial military in 1954. The 1871–1945 Japanese military and naval ranks were phased out after World War II.
The Ranks of the Imperial Japanese Army were the rank insignia of the Imperial Japanese Army, used from its creation in 1868, ... Code of Conduct; Developers;
[6] Among the rules there existed a code of honor that was later used by Japanese military governments. With the revolutionary change in the Meiji Restoration and frequent wars against China and Russia, the militarist government of Japan adopted the concepts of Bushido to condition the country's population to be ideologically obedient to the ...