For those PPRuNe Members who have an interest in the history of WWII Enigma, Cryptography and Ultra Ops in general, I would thoroughly recommend watching the recently released film entitled 'The Imitation Game'. Benedict Cumberbatch plays Alan Turing with Keira Knightley as Joan Clarke. The story is very well told IMHO.
Image Credit : Radio Times
It makes you shudder to think of the consequences had Turing not been successful in developing one of the first computers to help decrypt enemy message traffic. Even more chilling is the fact that not all decrypts could be used for fear of revealing the fact we had broken the Enigma Code.