A 'Bombe' code-breaking machine at Bletchley Park, 1943.
© Science Museum / Science & Society Picture Library
Rear view of a British Bombe decoding machine plugged up with three menus, in hut 11a at Bletchley Park, Buckinghamshire, the British forces' intelligence centre during WWII. The cryptographers at Bletchley Park deciphered top-secret military communiques between Hitler and his armed forces. These communiques were encrypted in the 'enigma' code which the Germans considered unbreakable, but the codebreakers at Bletchley cracked the code with the help of Bombe machines, and so aided the Allies' victory.