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This was a naval code used by merchant ships (commonly known as the "maru code"), [22] broken in May 1940. 28 May 1941, when the whale factory ship Nisshin Maru No. 2 (1937) visited San Francisco, U.S. Customs Service Agent George Muller and Commander R. P. McCullough of the U.S. Navy's 12th Naval District (responsible for the area) boarded her ...
Japanese army and diplomatic codes. This article is on Japanese army and diplomatic ciphers and codes used up to and during World War II, to supplement the article on Japanese naval codes. The diplomatic codes were significant militarily, particularly those from diplomats in Germany.
Naval Air Group Naval vessel Tail code ... Special issue Photo album of Imperial Japanese Navy Aircraft in World War II, 1987. Bunrin-Dō Co., Ltd., Tōkyō, Japan.
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.
Code name First flown Number built Service Aichi M6A1-K Nanzan Navy Special Strike Submarine Bomber trainer: n/a 1943 2 IJN: Kawanishi N1K2-K Shiden Navy Land Interceptor modified as Fighter Trainer: George 1943 IJN: Kyushu K10W1 Navy Type 2 Land-based Intermediate Trainer: Oak 1941 176 IJN: Kyushu K11W1 Shiragiku Navy Operations Trainer: n/a ...
In 1923, a US Navy officer acquired a stolen copy of the Secret Operating Code codebook used by the Imperial Japanese Navy during World War I.Photographs of the codebook were given to the cryptanalysts at the Research Desk and the processed code was kept in red-colored folders (to indicate its Top Secret classification).
Identification chart of Japanese aircraft Mitsubishi G3M aircraft of the Imperial Japanese Navy were nicknamed "Nell" by Allied forces during World War II.. The World War II Allied names for Japanese aircraft were reporting names, often described as codenames, given by Allied personnel to Imperial Japanese aircraft during the Pacific campaign of World War II.
At the beginning of the Pacific War, the strategy of the Imperial Japanese Navy was underpinned by several key assumptions.The most fundamental was that just as the Russo-Japanese War had been decided by a single naval battle at Tsushima (May 27–28, 1905), the war against the United States would also be decided by a single, decisive battle at sea, or Kantai Kessen. [14]