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During WWII, Ultra was the code name for the Allied intelligence derived from breaking the German Enigma cipher Published in 1974, this was one of the first public accounts of Ultra There are almost no cryptographic details in this book it is a personal recollection of a man s role in preserving the operational secrecy for the secret itself It describes a network of special liaison units SLU s and training visits to the principal receivers of the intelligence Churchill, Eisenhower and t During WWII, Ultra was the code name for the Allied intelligence derived from breaking the German Enigma cipher Published in 1974, this was one of the first public accounts of Ultra There are almost no cryptographic details in this book it is a personal recollection of a man s role in preserving the operational secrecy for the secret itself It describes a network of special liaison units SLU s and training visits to the principal receivers of the intelligence Churchill, Eisenhower and their associates Through these visits, he describes their attitude and reactions to Ultra.Much of the book is a description of messages intercepted at key points in the war and their influence on later events However, the author did not have access to the actual intercepts while writing the book, so the view is hazy The most interesting story to me was Rommel s tale in North Africa and Europe as viewed through the window of the intercepts I first read this book back in 1975, when it first came out After seeing The Imitation Game I dug it out from the basement bookshelves for another quick read.Back in 1975, the book caused quite a stir, being the first report that the allies in WWII had actually broken the German codes and were frequently able to know exactly what the German plans and order of battle were Elsewhere on the net one can find now declassified reviews from inside NSA where apparently quite a few people got their kni I first read this book back in 1975, when it first came out After seeing The Imitation Game I dug it out from the basement bookshelves for another quick read.Back in 1975, the book caused quite a stir, being the first report that the allies in WWII had actually broken the German codes and were frequently able to know exactly what the German plans and order of battle were Elsewhere on the net one can find now declassified reviews from inside NSA where apparently quite a few people got their knickers in a twist.The flaws of this book are well documented There are a lot of inaccuracies and omissions Winterbotham was definitely not a cryptologist in his list of the back room boys he completely omits Alan Turning Among the glaring inaccuracies is Winterbotham s assertion than the Japanese where using Enigma machines or variants thereof.Still, I would cut Winterbotham some slack He was writing from memory, in his probably 80 s , without access to still classified files It is a fascinating memoir of the man who passed to Enigma decrypts on Confidant of Churchill, Montgomery, Eisenhower, Bradley, Alexander, Patton, and others, it provides an intimate if slightly self aggrandized window into the winning of the war An interesting high level look at how the Allies ability to read the German High Command signals was instrumental in defending Britain early in the war and in offensive strategy later in the war. I originally bought this hoping to learn about the workings of Bletchly Park and the cryptographic activity that went on there As it turns out this is not the book for that particular story, but nonetheless I m very glad to have read this The Ultra Secret concentrates rather on the story of how the intelligence gained from the Enigma and other code breaking was used in the Allied conduct of the second World War and how this information was securely distributed to those who needed it all tol I originally bought this hoping to learn about the workings of Bletchly Park and the cryptographic activity that went on there As it turns out this is not the book for that particular story, but nonetheless I m very glad to have read this The Ultra Secret concentrates rather on the story of how the intelligence gained from the Enigma and other code breaking was used in the Allied conduct of the second World War and how this information was securely distributed to those who needed it all told from the personal perspective of the author I found it fascinating to read of the author s impressions of how the different commanders and generals reacted to having this information, and how well they were able to adapt to using what was hitherto an unprecedented level of insight into enemy operations Interesting also were the author s impressions of the enemy leadership at a personal level, as he read and digested their signals over what they believed to be secure channels.The book concentrates mainly on the European and African war, with only a chapter or two skimming the Pacific war, so I ll need to delve into another book for that Published as it was in 1974, there are undoubtedly newer accounts, withand updated or corrected information, but this has been a good introduction for me into this aspect of WW2 history I thought I would not like this because I am not really into military history at all I only like the spy stuff But this narrative by the man who organized and shepherded the Ultra messages decodings of Nazi secret ciphers from the Enigma machine was very interesting That said, it is mostly a revelation about the role of Ultra in the battles of World War II, with a definite focus on the European theater. Read the other reviews As a person too young to understand the war while it was going on, the impressions I got after the war changed after reading The Ultra Secret America s forces and our allies were greatly aided by having the machine code breaker called the Enigma machine.I was told about this book by a woman friend who worked on the project as one of the early women who enlisted at the time and who kept silent about it for the 30 years that all who worked on it were required to maintain Read the other reviews As a person too young to understand the war while it was going on, the impressions I got after the war changed after reading The Ultra Secret America s forces and our allies were greatly aided by having the machine code breaker called the Enigma machine.I was told about this book by a woman friend who worked on the project as one of the early women who enlisted at the time and who kept silent about it for the 30 years that all who worked on it were required to maintain secrecy She s alive today and shared with me her impressions of that time .READ KINDLE ⚖ The Ultra Secret ⚆ Operation Ultra was designed to intercept decode German signals sent using Enigma, the top secret German cypher machine FW Winterbotham, was the man responsible for the organization, distribution security of Ultra This is his personal account of the operation First person perspective of the war as a whole, with some developed perspective of the war as a whole and an under lying timeline of German forces movements as decoded from Enigma Also describes the complexities of the code breaking process, butin a we re talking over drinks rather than diving into advanced theories. I had no idea until about a year ago that we had access to many of Hitler s communications during the war How cool was that This book was written by a guy who was directly involved in reviewing the communications they recovered from Ultra. very interesting and so grateful to the many who made this information a vital piece in winning the war against Hitler and the Nazis We need to not forget.