Long time overdue. I also want to mention that the Polish contribution to the effort is much less known. Poland started it earlier (the Bomba project) and made

Long time overdue. I also want to mention that the Polish contribution to the effort is much less known. Poland started it earlier (the Bomba project) and made a few substantial steps, was overrun by the Nazis very quickly and managed to pass it over to the British. (See http://www.avoca.ndirect.co.uk/enigma/enigma4.htm http://www.avoca.ndirect.co.uk/enigma/enigma4.htm etc.)