The Life Of a Mathmatical Genius
Life During The War
During world war two he worked for the Government code and cypher school at Bletchley park. For a while he worked in hut 8 the section responsible for German naval cryptanalysis.
He was the inventor of many ways to decode the Germans codes one of which was the bombe. The bombe was an electro-mechanical machine that was used to help break the German enigma codes. It was invented by Alan Turning and Gordon Welchman.