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... that many messages were less than twenty six letters in length. This meant that the middle wheel of an Enigma machine never moved, which greatly reduced the number of alternative settings and made deciphering the code easier in some respects. The initial major breakthrough happened when Alan Turing, a twenty six year old mathematician from King's college Cambridge, developed the idea that a machine could carry out calculations when it was fed information on a strand of paper. By January 1940, Alan Turing become certain that the Polish information passed on was not entirely correct. He travelled to France to meet the Poles and asked them about their analysis of the Enigma instruction book and workings. Turing attained that he was correct in his theory and came back to England with the correct information. Straight away he started working on the messages and he completed one. A second breakthrough was made in ...