...just reading the book, The Imitation Game, so thought I'd watch it (U-571) again. If you read the credits at the end, the Americans, didn't actually capture enigma gear until 1944, and according to the book which is anything but a novel, the chaps at Bletchley Park, could deal with Enigma traffic within a day by 1944...oh well, Hollywood, what can you say. Great book by the way, but more applicable to university level maths, physics, or philosophy students. The movie should be good as well.
Robert