During World War II, dozens of women students at Cambridge University worked around the clock in complete secrecy to crack Nazi codes, but only now are the unsung heroes getting recognition.At least 77 students from the women-only Newnham College were drafted to Bletchley Park, the code-breaking center north of London, during the conflict.
'Everything was quite mad, really' The only one whose name has so far gone down in history is mathematician Joan Clarke, who was recruited in 1940 and worked with the celebrated Enigma decoder and computer scientist Turing, to whom she was briefly engaged.She became deputy head of her unit and after the war continued to work in intelligence. Keira Knightley won an Oscar nomination for her portrayal of Clarke in the 2014 film 'The Imitation Game.