UNITED KINGDOM

World War II

Ultra

G

Gallehawk, John.

1. Convoys and the U-boats. Bletchley Park Report no. 7. Bletchley Park, UK: Bletchley Park Co. Ltd., 1997.

Kruh, Cryptologia 22.2: "An account of critical events in the Battle of the Atlantic in March 1943."

2. How the Enigma Secret Was Nearly Revealed. Bletchley Park Report no. 11. Bletchley Park, UK: Bletchley Park Co. Ltd., 1998.

Kruh, Cryptologia 24.4: "The author describes three examples of how the secrecy of Ultra information was potentially compromised but fortunately the Germans never recognized the opportunity that was before them."

3. Some Polish Contributions in the Second World War. Bletchley Park Report no. 15. Bletchley Park, UK: Bletchley Park Co. Ltd., 1999.

Kruh, Cryptologia 24.4: "This report recounts the pre-war breaking of the German Enigma cipher system and the famous meeting of July 1939, when this work was revealed to the British and French Intelligence Services."

4. "Third Person Singular (Warsaw 1939)." Cryptologia 30, no. 3 (Jul.-Sep. 2006): 193-198.

Based on "official documentary evidence," the author identifies the third person who met with Polish and French cryptologists in Warsaw in July 1939 as Commander Humphrey Sandwith, head of the Admiralty Interception Service.

5. and Kerry Johnson. Figuring It Out at Bletchley Park 1939-1945. Reddich, UK: Book Tower, 2007.

Kruh, Cryptologia 32.2 (Apr. 2008), notes that this work "is not a textual one, it is a compilation of facts and figures about the Bletchley Park operation." This is an "essential reference book" that "offers important and interesting data."

Gannon, Paul. COLOSSUS: Bletchley Park’s Greatest Secret. London: Atlantic, 2006.

According to Peake, Studies 50.3 (Sep. 2006) and Intelligencer 15.2 (Fall-Winter 2006-2007), the author "sorts out the differences in the BOMBE and COLOSSUS, describes their actual contribution to the war effort, and clarifies the true role of Alan Turing. The first two parts of the book describe the intercept and decryption processes. The third contains 17 appendices that describe the technical aspects of codebreaking.... This book is a comprehensive treatment of an important and, heretofore, not well-understood subject. A readable, thoroughly documented, valuable contribution."

Cohu, Telegraph (London), 12 Mar. 2006, finds that this "book is a labour of love" and the author's "knowledge is profound, but it is poorly edited and can be turgid.... A telecommunications specialist, Gannon is very good on the Post Office contribution, but he lost me when describing the mathematical processes of encryption and decryption." Ferry, The Guardian, 29 Jul. 2006, finds that comparing Gannon's treatment to Jack Copeland's, Gannon's work "is readable enough if you want a single-author treatment, though it suffers occasionally from poor editing."

To Singh, Times (London), 11 Mar. 2006, the author "weaves together four strands" of the Colossus story. He "explains the cryptography in detail, and gives an equally rigorous account of how it influenced military strategy. Thirdly, and possibly closest to his heart, he argues that Colossus was an historic breakthrough in computing.... Finally, Gannon tells of the heroic efforts of the inventors and mathematicians."

Garlinski, Jozef. The Enigma War. New York: Scribner's, 1979. Intercept: The Enigma War. London: Dent, 1980.

For Constantinides, this is neither Garlinski's best book nor the best book on the cryptographic aspects of World War II. The author relied too much on secondary sources and was "prone to repeat errors or speculations." Nautical Brass Bibliography calls Garlinski "[a]n excellent narrative story of Enigma, spies, and intelligence from the Polish point of view."

Gill, Stuart. Blood in the Sea: HMS Dunedin and the Enigma Code. London: Weidenfeld and Nicolson, 2003.

Gladwin, Lee A. "Alan Turing, Enigma and the Breaking of German Machine Ciphers in World War II." Prologue: The Journal of the National Archives 29, no. 3 (1997): 203-217.

Good, Irving John, "From Hut 8 to the Newmanry." In Colossus: The Secrets of Bletchley Park's Codebreaking Computers, eds. B. Jack Copeland, et al., 204-222. Oxford & New York: Oxford University Press, 2006.

Grey, Christopher. Decoding Organization: Bletchley Park, Codebreaking and Organization Studies. Cambridge: Cambridge University Press, 2012.

Christensen, Cryptologia 37.2 (2013), comments that the author's "viewing of the wartime years [at Bletchley Park] through the eyes of an organization behavior researcher provides a new and interesting perspective -- a focus on the organization and not the codebreaking." Peake, Studies 57.3 (Sep. 2013), and Intelligencer 20.2 (Fall-Winter 2013), suggests that "[f]or those not schooled in organizational theory, it may be useful to read the conclusions first. Here, Grey explains in greater detail the 'decoding BP' metaphor."

Grey, Christopher, and Andrew Sturdy. "The 1942 Reorganization of the Government Code and Cypher School." Cryptologia 32, no. 4 (Oct. 2008): 311-333.

The focus here is the reorganization of Bletchley Park (BP) in January 1942. This reorganization "marked a transition in the leadership of BP from Commander Alistair Denniston to Commander (later Sir) Edward Travis. It also ... marked a transition from a small, rather ad hoc, organization to a larger, more formalised and industrialised, organization."

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