The Bombe machine was a key device in the cryptanalysis of the ciphers created by the machine system widely employed by the Axis powers during the Second World War – Enigma. The Bombe machine was initially designed in Britain by scientists in primary cryptanalysis agency, the Government Code and Cypher School at Bletchley Park. The machines were then mass produced by the British Tabulating Machine Company in Britain, and by the National Cash Register Company in the United States of America. The design, development and mass production of the machine was a fraught process dependent on support from scientists and bureaucrats within the agency, but more importantly the agency was only moved to mechanise, and subsequently professionalise, this key function in its operations when met with a series of major crises. The result was an unplanned ad hoc process of designing, building and operating the machines. This was representative of the wider process of mechanisation within Bletchley Park, one of the most important and renowned technological centres to emerge in Britain during the Second World War.

... device known at the time, the typewriter keyboard-operated Enigma machine. By striking a key, the operator generated an electrical impulse that passed through three metal rotors. With each rotor's 26 settings, coupled with other ... World War II on Film examines the war through the lens of 12 films. The movies selected include productions made during World War II and in each succeeding decade, providing a sense of how different generations perceive the war. World War II on Film provides a succinct yet well-grounded appraisal of that war as seen through 12 representative films. The book separates fact from fiction, showing where the movies were accurate and where they departed from reality, and places them in the larger context of historical and social events. Each movie chosen represents a particular aspect of the conflict, including the air war over Europe, the condition of prisoners of war, Nazi atrocities, and the British evacuation at Dunkirk. Unlike most histories of Hollywood during World War II or the genre of

The Bombe (UK: /bɒmb/) was an electro-mechanical device used by British cryptologists to help decipher German Enigma-machine-encrypted secret messages The Bombe (UK: ) was an electro-mechanical device used by British cryptologists to help decipher German Enigma-machine-encrypted secret messages during World War II. The British Bombe was developed from the Polish bomba, which had been designed at the Cipher Bureau by cryptologist Marian Rejewski, who had been breaking German Enigma messages for the previous seven years, using it and earlier machi Th…

... Enigma . Polish intelligence had presented the British with a version of this machine in 1939 , and the existence of ... code with their Enigma machines , would be relayed to Bletchley , where the cryp- tographers would do their ... In the bestselling tradition of Spy Catcher, The Master Spy recounts the entire Kim Philby story as revealed to the only Western journalist Philby trusted.