Dimensions
130 x 197 x 17mm
The Inside Story of Operation Ultra, Bletchley Park and Enigma.
In 1939 an elite group of men and women were working at Bletchley Park in Buckinghamshire. Their assignment: to crack Enigma, the top-secret cypher machine smuggled out of Germany which was destined to carry wartime signals throughout the German high command. The operation was code-named Ultra and by April 1940 the first enemy signals were intercepted and broken.
F W Winterbotham was the man responsible for the organisation, distribution and security of Ultra. Here is his personal story of how this most secret information was received and distributed to commanders in the field, and the vital role it played in Britain's survival in the early years of the war, and in the later Allied victories.
'The Ultra Secret' was the first book to reveal the Second World War's best-kept secret, and remains an unrivalled account of Ultra, in Churchill's own words, "the secret weapon that won the war".
