. . "\"Presents the first full account of history's greatest codebreaking coup. With trillions of ways to encrypt any one message, Enigma, Germany's infamous message-coding machine, appeared invincible. But a fateful discovery on an abandoned U-boat helped the Allies at Bletchley Park turn code into counterattacks and defeat into victory\"--Container."@en . "History"@en . . . "In 1940, Europe lay under the Nazi jackboot. German bombers inleashed the blitz against Britain and U-boats decimated the convoys, her only lifelines. Churchill had a secret weapon: a group of American and British mathematicians, crossword fanatics, linguists, and chess champions who decoded an \"unbreakable\" Nazi device and changed history."@en . . . . "Documentary"@en . . . . . "Video recordings for the hearing impaired"@en . . . "Television programs"@en . . "Documentary television programs"@en . . "Nonfiction television programs"@en . . . "Nazi secrets revealed"@en . . . . "Decoding Nazi secrets"@en . "Historical television programs"@en . . . . . . . . . . . . . . . . . . . . . . . "1939 - 1945" . . "World War, 1939-1945 War work." . . "World War, 1939-1945 Cryptography." . . "Enigma cipher system." . . "World War, 1939-1945." . .