Title: Enigma U-boats
First published: 2000
Subjects: British Naval operations, Cryptography, Electronic intelligence, German Naval operations, History, Naval operations, Naval operations, British, Naval operations, German, Secret service, Submarine, Submarines (Ships), World War, 1914-1918, World War, 1939-1945, Guerre mondiale, 1939-1945, Renseignement électronique, Opérations navales allemandes, Cryptographie, Histoire, Opérations sous-marines, Service secret, Naval Military operations, German, Unterseebootkrieg, Kryptologie, Weltkrieg
Places: Germany, Great Britain
Time periods: 20th century