of Japanese naval codes and ciphers was crucial to the conduct of World War II, and had an important influence on foreign relations between Japan and...

article on Japanese naval codes. The diplomatic codes were significant militarily, particularly those from diplomats in Germany. Japanese army (IJA) and...

decrypting the Japanese naval codes, exploiting the aforementioned Japanese neglect of fleet defense, technological upgrades to its air and naval forces, superior...

phonetic code at the time for "H" for Heʻeia, Hawaii radio tower. The precise importance and role of HYPO in penetrating the Japanese naval codes has been...

Gisbert Hasenjaeger Hagelin machine Enigma machine Japanese army and diplomatic codes Japanese naval codes PURPLE JN-25 Cryptanalysis of the Enigma Biuro...

rayon. Japan was importing raw cotton, wool, and oil imported products. Imperial Japanese Army Railways and Shipping Section Japanese naval codes including...

breaking of the German Enigma code and headed the section tasked with breaking Japanese Naval codes. Foss was born in Kobe, Japan, one of five children of...

section of the Government Code and Cypher School (GC&CS) at Bletchley Park tasked with the solution of Japanese naval codes such as JN4, JN11, JN40, and...

codes. Hut 6: Cryptanalysis of Army and Air Force Enigma Hut 7: Cryptanalysis of Japanese naval codes and intelligence. Hut 8: Cryptanalysis of Naval...

The Ranks of the Imperial Japanese Navy were the rank insignia of the Imperial Japanese Navy, used from its creation in 1868, until its dissolution in...

antenna tower for Station HYPO, the naval cryptanalytic station that did so much toward breaking Japanese naval codes in 1941-1942 that resulted in US victory...

on Japanese diplomatic codes, but the organization's primary focus was on Japanese military codes. The US Navy first got a handle on Japanese naval codes...

description of the codes he and his cryptanalysts broke, Japanese codes in 1919 were weak and barely deserved to be called "codes". He might have exaggerated...

to as the Blue Book Blue Book, the American name for one of the Japanese naval codes during World War II Various information registers from U.S. state...

32nd Army Groups. In early June, Japan put its operations into action, but the Americans had broken Japanese naval codes in late May and were fully aware...

broken Japanese Naval codes. Writer Nick Sparks believes that the chaos in Nanjing created an opportunity for renegade factions within the Japanese army...

Computer Security Center Red Book, American name for one of the Japanese naval codes during World War II The Red Book, alternate name for the 8th edition...

have access to and use intelligence from Magic. Japanese army and diplomatic codes Japanese naval codes Ultra (cryptography) Lowman 2000, p. 39. Lowman...

used by Japanese civil ships of the United States Naval Shipping Control Authority for Japanese Merchant Marines. Modified from the "E" signal code, the...

and then moved to the Pacific theatre where he worked on breaking Japanese naval codes. On his return to the United States he earned a B.Sc. in electrical...

Japanese attack at Midway Atoll. The U.S. Navy, having broken the Japanese naval codes, proceeded as if this was just a diversion, and it did not expend...

that the mission could reveal that the United States had broken Japanese naval codes, the commanders decided the knowledge could be protected as long...

(290 km) west from Kiska. Because the Office of Naval Intelligence had broken the Japanese naval codes, Admiral Chester Nimitz learned by May 1942 of Yamamoto's...

the Japanese fleet. Military historian John Keegan called it "the most stunning and decisive blow in the history of naval warfare", while naval historian...

that Japan's naval codes have been broken and that he must inform headquarters. In the 2001 film Pearl Harbor, Yamamoto was portrayed by Japanese-born...

after the war such as the fact that the Americans had broken the Japanese naval codes (which came out in 1946) and the British deception operation of 1943...

former school in Kilindini in 1942, where it worked on deciphering Japanese naval codes. Kenya also gave its name to a British cruiser which served during...

2020. O'Neal, Michael J. "World War II United States Breaking of Japanese Naval Codes". Encyclopedia.com. Retrieved September 27, 2020. "Pearl Harbor"...

War in December 1941, the Imperial Japanese Navy (IJN) was the third most powerful navy in the world, and the naval air service was one of the most potent...

The Navy unit was used in breaking Japanese naval codes. The US Navy's Station CAST and Fleet Radio Unit at Naval Base Melbourne was the other unit working...