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On ULTRA Active Service - The Story of Australia's Signals Intelligence Operations During World War II by Geoffrey St. Vincent Ballard


  • Spectrum Publications Australia 1991
  • ISBN: 0 86786 274 2
  • First Edition
  • Ex Library (Has Library Markings)
  • Burgundy Hardcover with Dust Jacket 

'ULTRA' was the Top Secret code-word for inteiigence derived from enemy high grade cyphers.

History of Australia's signals intelligence operations by a foundation member of Central Bureau, the Australia-US TSigint' organisation. Uses hitherto unseen primary sources to portray the people of the organisation as well as the significance of their duties during World War II. Includes a foreword by Brian Howe (October 30, 1989), then federal Minister for Social Security. (Publisher)

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