The Ultra Secret: The Inside Story of Operation Ultra, Bletchley Park and Enigma

Front Cover
Orion, 2000 - World War, 1939-1945 - 199 pages
Operation Ultra was designed to intercept and decode German signals sent using Enigma, the top-secret German cypher machine. F.W. Winterbotham, was the man responsible for the organization, distribution and security of Ultra. This is his personal account of the operation.

Bibliographic information

TitleThe Ultra Secret: The Inside Story of Operation Ultra, Bletchley Park and Enigma
AuthorFrederick William Winterbotham
Editionillustrated, reprint
PublisherOrion, 2000
ISBN0752837516, 9780752837512
Length199 pages
  
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