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WI the British code breakers at Bletchley Park hadn't managed to break the Nazi Enigma codes (or U110 hadn't been captured with its Enigma rotors intact, or the 2500 valve Mark II Colossus computer had failed) and Ultra had failed to reveal the U Boat Wolf Pack routes in the critical summer 1941, Rommel's plans, Kursk Offensive info handed to Stalin, D Day preparations etc, could it literally have cost the war, or is Ultra's role overplayed?
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