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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.
A similar break into the most secure Japanese diplomatic cipher, designated Purple by the US Army Signals Intelligence Service, started before the US entered the war. Product from this source was called Magic. On the other side, German code breaking in World War II achieved some notable successes cracking British naval and other ciphers.
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]
This article contains a list of air groups of Imperial Japanese Navy Air Service.Literal translation of 海軍航空隊 (Kaigun Kōkūtai) is "Naval Air Group", however, "Naval" is typically omitted in most of the established English-language sources (e.g., [1] [2] [3] [4]).
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.
The Imperial Japanese Navy (IJN; Kyūjitai: 大日本帝國海軍 Shinjitai: 大日本帝国海軍 Dai-Nippon Teikoku Kaigun ⓘ 'Navy of the Greater Japanese Empire', or 日本海軍 Nippon Kaigun, 'Japanese Navy') was the navy of the Empire of Japan from 1868 to 1945, when it was dissolved following Japan's surrender in World War II.
Imperial Japanese Navy ship classifications went through various changes between 1871 and 1945, as technology changed and new ship classes were added while those that became obsolete were discontinued.