The new book, Behind the Enigma, is released today on Tuesday ( UK?). It is based to top secret GCHQ files. According to an official history of UK spy agency GCHQ says Bletchley Park's contribution to WW2 is overrated. The author, Professor John Ferris of the Calgary University, told the BBC "Bletchley Park is not the war winner that a lot of Brits think it is. It still played an important role". GCHQ known as Britain's listening Post, was set up on 1 November 1919 as peacetime "cryptanalytic" unit. During WW2, staff were moved to Bletchley Park, to decrypt Nazi Germany's messages including Enigma communications.
