Title: The Ultra secret
Description: The first account of the most astounding cryptanalysis coup of World War II - how the British broke the German code and read most of the signals between Hitler and his generals throughout the war.
Subjects: Secret service, World War, 1939-1945, Cryptography, British Personal narratives, World war, 1939-1945, secret service, great britain, World war, 1939-1945, miscellanea, ULTRA (Intelligence system), Military intelligence, History