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During the Second World War, the British and the Allies had the help of thousands of codebreakers located at Bletchley Park in the UK. In 1939, one of these sleuths, Alan Turing, a young mathematician and computer scientist, was responsible for the design of the electromechanical machine named the Bombe. The British used this device to break the German Enigma Cipher.* At the same location in 1943, Tommy Flowers, with contributions from Turing, designed the Colossus, a set of computers built with vacuum tubes, to help the Allies crack the Lorenz Cipher.* These two devices helped break the German codes and predict Germanyβs strategy. According to US General Eisenhower, cracking the enemy codes was decisive for the Allies winning the war.