Only half the truth Janne - I suggest you leave this topic. Your comments sound slightly prejudicial.
"Who broke the Enigma? In fact, the Enigma had to be broken afresh
over and over again. The hardware is not the whole story, and capturing it did not allow Enigma messages to be read. The German use of the Enigma depended on systems for setting the
keys for each message transmitted, and it was these
key-systems that had to be broken. There were many such systems, often changing, and the hardware was changed as well from time to time. The brilliant pre-war work by Polish mathematicians enabled them to read Enigma messages on the simplest key-systems. The information they gave to Britain and France in 1939 may have been crucial, but it was not sufficient for the continuation and extension of Enigma breaking over the next six years. New ideas were essential.
In late 1939, Alan Turing and another Cambridge mathematician,
Gordon Welchman, designed a new machine, the British
Bombe. The basic property of the Bombe was that it could break any Enigma-enciphered message, provided that the hardware of the Enigma was known and that a plain-text 'crib' of about 20 letters could be guessed accurately. "