Top Secret Ultra: Breaking Luftwaffe Ciphers at Bletchley Park - Paperback
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Availability:Out of StockContributor:Peter Calvocoressi, Joel GreenbergPublish date:6/12/2025Pages:256
Languages:EnglishPublisher:Greenhill BooksISBN-13:9781805001256ISBN-10:1805001256UPC:9781805001256Book Category:Political Science, HistoryBook Subcategory:Intelligence & Espionage, Military, Wars & ConflictsBook Topic:Intelligence & Espionage, World War IISize:9.20 x 6.10 x 0.70 inchesWeight:0.7518Product ID:SCDCBYWR6Z
Peter Calvocoressi's journey from Ministry of Economic Warfare to head of RAF intelligence at Bletchley Park is detailed in his memoir.
Shortly after the outbreak of the Second World War, a young Peter Calvocoressi was serving in the Ministry of Economic Warfare, his role largely consisting of reviewing shipping manifests day in day out. In 1940, he decided to volunteer for the War Office but was turned away on account of a recently-sustained head injury. The note on his file? "No good for anything - not even intelligence." In spite of this, Calvocoressi was able to apply to the Air Ministry, was commissioned in RAF intelligence and, by early 1941, found himself at Bletchley Park.
Calvocoressi was assigned to a section of Bletchley dealing with Luftwaffe Ultra intelligence where - as deputy head and, from 1944, as head - he spent the rest of the war translating and interpreting decrypted Enigma signals.
The codebreaking operations at Bletchley Park came to an end in 1946, however all information about this wartime enterprise was classified and remained a secret until the mid-1970s, after which Calvocoressi recounted his experiences at Bletchley in Top Secret Ultra, published in 1980. This comprehensive new edition of Calvocoressi's book features exciting new material from his son David and from renowned historian and author (specialising in signals intelligence) Dr Joel Greenberg. This is required reading for anybody with an interest in this utterly and indisputably fascinating aspect of the Allied war effort during World War II.
Shortly after the outbreak of the Second World War, a young Peter Calvocoressi was serving in the Ministry of Economic Warfare, his role largely consisting of reviewing shipping manifests day in day out. In 1940, he decided to volunteer for the War Office but was turned away on account of a recently-sustained head injury. The note on his file? "No good for anything - not even intelligence." In spite of this, Calvocoressi was able to apply to the Air Ministry, was commissioned in RAF intelligence and, by early 1941, found himself at Bletchley Park.
Calvocoressi was assigned to a section of Bletchley dealing with Luftwaffe Ultra intelligence where - as deputy head and, from 1944, as head - he spent the rest of the war translating and interpreting decrypted Enigma signals.
The codebreaking operations at Bletchley Park came to an end in 1946, however all information about this wartime enterprise was classified and remained a secret until the mid-1970s, after which Calvocoressi recounted his experiences at Bletchley in Top Secret Ultra, published in 1980. This comprehensive new edition of Calvocoressi's book features exciting new material from his son David and from renowned historian and author (specialising in signals intelligence) Dr Joel Greenberg. This is required reading for anybody with an interest in this utterly and indisputably fascinating aspect of the Allied war effort during World War II.
Languages:EnglishPublisher:Greenhill BooksISBN-13:9781805001256ISBN-10:1805001256UPC:9781805001256Book Category:Political Science, HistoryBook Subcategory:Intelligence & Espionage, Military, Wars & ConflictsBook Topic:Intelligence & Espionage, World War IISize:9.20 x 6.10 x 0.70 inchesWeight:0.7518Product ID:SCDCBYWR6Z
Greenberg, Joel: - "Joel Greenberg is an author and historian who researches and writes about signals intelligence and its impact on two world wars. He is the author of _Gordon Welchman, Bletchley Park's Architect of Ultra Intelligence_. His book is the basis of a joint BBC/Smithsonian Network 2015 documentary about Welchman - _The Forgotten Genius of Bletchley Park_."Calvocoressi, Peter: - Peter Calvocoressi was born in Karachi, British India in 1912 before moving to England where he grew up, attending Eton and then Oxford University. During World War II, he worked as an intelligence analyst at Bletchley Park. After the war, Calvocoressi's impressive career saw him working as a lawyer, a politician, a publisher, an academic, a journalist, an author and an historian. He died in Dorset in 2010 at the age of 97.
Publisher: Greenhill Books
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