Bletchley Park and D-Day David Kenyon

Publication date:
10 May 2022
Yale University Press
352 pages: 197 x 127mm
23 b-w illus.; 2 maps
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The untold story of Bletchley Park's key role in the success of the Normandy campaign

Since the secret of Bletchley Park was revealed in the 1970s, the work of its codebreakers has become one of the most famous stories of the Second World War. But cracking the Nazis’ codes was only the start of the process. Thousands of secret intelligence workers were then involved in making crucial information available to the Allied leaders and commanders who desperately needed it.
Using previously classified documents, David Kenyon casts the work of Bletchley Park in a new light, as not just a codebreaking establishment, but as a fully developed intelligence agency. He shows how preparations for the war’s turning point—the Normandy Landings in 1944—had started at Bletchley years earlier, in 1942, with the careful collation of information extracted from enemy signals traffic. This account reveals the true character of Bletchley's vital contribution to success in Normandy, and ultimately, Allied victory.

David Kenyon is the research historian at Bletchley Park.

"Using previously classified documents, this book casts the work of Bletchley Park in a new light"–Military History

“Pleasingly, David Kenyon's Bletchley Park and D-Day shines out and makes for very interesting in-depth reading, as it gives an illuminating examination of the intelligence operations that helped to secure the Allied victory at Normandy”— Melody Foreman, Britain at War

“[A] very readable, yet scholarly book…It can be recommended to both newcomers to SIGINT and to those who have already read extensively on the subject of Bletchley Park.”—David Harris, Radio User

“[M]akes an important contribution to the historiography of World War II intelligence history in general and, more specifically, of Bletchley Park and to a broader understanding of the Bletchley players, who...have not received the attention that others who played a role in the successful Normandy invasion have.”—Mary Kathryn Barbier, Cercles 

"In this well researched and fascinating addition to the history of intelligence gathering at Bletchley Park, David Kenyon has added a new dimension to our understanding of the way in which the gathering and interpretation of signals intelligence (SIGNIT) added to the knowledge of enemy operations and strength, and how this information was analysed and used in the build up to Operation Overlord on D-Day."—Linda Parker, Second World War Research Group

"David Kenyon and Bletchley Park is the dream ticket. A wonderful scholar and communicator writing about one of the world's most fascinating historical sites." - Dan Snow, historian, documentary filmmaker and television presenter