World War, 1939-1945 12 Guerre mondiale, 1939-1945 10 Cryptographie 7 Cryptography 7 Campaigns 5 HISTORY 5 Military campaigns 5 Armed Forces 4 Campagnes et batailles 4 Electronic intelligence 4 Renseignement électronique 4 BIOGRAPHY & AUTOBIOGRAPHY 3 Historical 3 Western 3 American 2 Communication systems 2 Confidential communications 2 General 2 History 2 Military intelligence 2 Military operations, Naval 2 Naval operations, American 2 Operation Dragoon, 1944 2 Operation Husky, 1943 2 Operation Torch, 1942 2 Opération Anvil, 1944 2 Opération Husky, 1943 2 Opération Torch, 1942 2 Opérations navales américaines 2 Pearl Harbor (Hawaii), Attack on, 1941 2