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[1] [2] [3] 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 ...
Signals intelligence (SIGINT) is the act and field of intelligence-gathering by interception of signals, whether communications between people (communications intelligence—abbreviated to COMINT) or from electronic signals not directly used in communication (electronic intelligence—abbreviated to ELINT). [1]
A second important code - the Handelsverkehrsbuch (HVB) codebook used by the German navy - was captured at the very start of the war from the German-Australian steamer Hobart, seized off Port Philip Heads near Melbourne on 11 August 1914. The code was used particularly by light forces such as patrol boats, and for routine matters such as ...
In 1930, the Japanese government created a more complex code that was codenamed BLUE, although RED was still being used for low-level communications. It was quickly broken by the Research Desk no later than 1932. US Military Intelligence COMINT listening stations began monitoring command-to-fleet, ship-to-ship, and land-based communications.
Before the US entered the war at the end of 1941, B-Dienst could also read several American codes. This changed after April 1942, when the US Navy changed their code systems, but earlier, the ability to read American message traffic contributed to the success of Operation Paukenschlag (Operation Drumbeat ), the destructive U-boat attacks off ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 30 December 2024. Military personnel using their native languages for secret wartime communication "Codetalkers" redirects here. For the band, see the Codetalkers. For the Metal Gear Solid V: The Phantom Pain character, see list of characters in the Metal Gear series § Code Talker. Choctaw soldiers in ...
The UK and US employed large numbers of women in their code-breaking operation, with close to 7,000 reporting to Bletchley Park [31] and 11,000 to the separate US Army and Navy operations, around Washington, DC. [32] By tradition in Japan and Nazi doctrine in Germany, women were excluded from war work, at least until late in the war. Even after ...
The Venona project was a United States counterintelligence program initiated during World War II by the United States Army's Signal Intelligence Service and later absorbed by the National Security Agency (NSA), that ran from February 1, 1943, until October 1, 1980. [1]