Michael Gannon - 2009 - 490 Seiten
In the first eight months of 1942, German submarines sank nearly 400 Allied freighters and tankers along the U.S. Atlantic coast with a loss of more than 5,000 merchant seamen ...
Frederick William Winterbotham - 1974 - 199 Seiten
Explains the British Intelligence's method of intercepting and decoding wireless messages between Hitler and his generals and its effect upon events in the war
David Kahn - 1983 - 343 Seiten
A collection of articles and monographs on cryptography ranges from a technical study of the spy cipher used by Reino Hayhanen to an argument against a government-sponsored ...
Gordon Welchman - 1982 - 326 Seiten
A British mathematician who joined England's code breakers at the outbreak of World War II, throws new light on the breaking of Germany's Enigma Code and on other clandestine ...
Melanie Wiggins - 1999 - 250 Seiten
Twenty-two U-boat veterans, mostly enlisted men, tell their stories in this collection of their experiences.