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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 ...
The W.E.B. Griffin series The Corps is a fictionalized account of United States Navy and Marine Corps intelligence operations in the Pacific Theater during World War II. Many of the main characters in the novels, both fictional and historical, have access to and use intelligence from Magic.
Military intelligence on the V-1 and V-2 weapons [3] developed by the Germans for attacks on the United Kingdom during the Second World War was important to countering them.: 437 Intelligence came from a number of sources and the Anglo-American intelligence agencies used it to assess the threat of the German V-weapons.
An improved Colossus Mark 2 that used shift registers to run five times faster first worked on 1 June 1944, just in time for the Normandy landings on D-Day. [6] Ten Colossi were in use by the end of the war and an eleventh was being commissioned. [ 6 ]
The causes of World War II have been given considerable attention by historians. The immediate precipitating event was the invasion of Poland by Nazi Germany on September 1, 1939, and the subsequent declarations of war on Germany made by Britain and France , but many other prior events have been suggested as ultimate causes.
World War II [b] or the Second World War (1 September 1939 – 2 September 1945) was a global conflict between two coalitions: the Allies and the Axis powers. Nearly all of the world's countries participated, with many nations mobilising all resources in pursuit of total war .
Total war is a concept that has been extensively studied by scholars of conflict and war. One of the most notable contributions to this field of research is the work of Stig Förster, who has identified four dimensions of total war: total purposes, total methods, total mobilisation, and total control.
The V2 (German: Vergeltungswaffe 2, lit. 'Vengeance Weapon 2'), with the technical name Aggregat 4 (A4), was the world's first long-range [4] guided ballistic missile.The missile, powered by a liquid-propellant rocket engine, was developed during the Second World War in Nazi Germany as a "vengeance weapon" and assigned to attack Allied cities as retaliation for the Allied bombings of German ...