The Reader of Gentlemen's Mail: Herbert O. Yardley and the Birth of American Codebreaking

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One of the most colourful and controversial figures in American intelligence, Herbert O. Yardley (1889-1958) gave America its best form of information, but his fame rests more on his indiscretions than on his achievements. In this highly readable biography, a premier historian of military intelligence tells Yardley's story and evaluates his impact on the American intelligence community. Yardley established the nation's first codebreaking agency in 1917, and his solutions helped the United States win a major diplomatic victory at the 1921 disarmament conference. But when his unit was closed in 1929 because "gentlemen do not read each other's mail", Yardley wrote a best-selling memoir that introduced - and disclosed - codemaking and codebreaking to the public. David Kahn describes the vicissitudes of Yardley's career, including his work in China and Canada, offers a capsule history of American intelligence up to World War I, and gives a short course in classical codes and ciphers. He debunks the accusations that the publication of Yardley's book caused Japan to change its codes and ciphers and that Yardley traitorously sold his solutions to Japan.

The Reader of Gentlemen's Mail: Herbert O. Yardley and the Birth of American Codebreaking Review

Despite its current reputation, there were times when American intelligence (meaning spying) was an unalloyed success. For many, the most interesting part of the spy business is signals intelligence, tuning into or breaking into foreign messages and decoding them. There has been signals intelligence of some sort ever since there has been international conflict, but the field took off when messages could be transmitted wirelessly. Anyone could pick up the signal, so the trick was to encode it; the counter-trick was to crack the code. Cryptographers and other spies already know and respect the name of Herbert O. Yardley. He isn't well known by others, but almost fifty years after his death, he has gotten a full, instructive biography, _The Reader of Gentleman's Mail: Herbert O. Yardley and the Birth of American Codebreaking_ (Yale University Press) by David Kahn. Kahn is the perfect teller of this tale, having written both articles for scholarly journals as well as popular books about intelligence matters. There is not a great deal of detail about the procedures of decryption, which are described only generally, but there is a unique American life here. According to Kahn, Yardley better than anyone foresaw how important cracking signals could be to American intelligence. He created the first permanent agency to intercept messages and break them. He was "the most colorful and controversial figure in American intelligence," and his controversial actions are fully included here.Yardley came to Washington DC in 1914, working as a telegrapher in the State Department. He was fascinated by the messages that came in and out, and determined that he would give his life to cryptography. His efforts within the Army Signal Corp were effective, but more important even than the wartime accomplishments was that Yardley convinced the Army and State Department to continue signal intelligence after Armistice Day. He believed that the stream of international communications could indicate the attitudes and plans of nations who were our friends as well as our foes. He was right; his work ensured that America knew what the aims of the Japanese were at the arms limitation talks in 1921, saving the government millions of dollars and buying some years of peace. Those who thought that "Gentlemen do not read each other's mail" eventually closed his bureau down. Yardley was, at different times in his life, to make up cryptogram puzzles for magazines, to go into the invisible ink business, to write novels, to write screenplays for Hollywood, to run a restaurant, and to attempt commercial orange-juice distillation, as well as to become decoder-for-hire for Canada and China. He made a hit with his first book in 1931, The American Black Chamber, which caused immediate furor, about his government decryptions. He showed what his bureau had done, and the reading public was very much interested. He was accused of treason, but Kahn shows that Yardley was merely trying to make big money, at which he never was very successful. It was his main character flaw: "Yardley was a rotter, not a traitor." One year before his death, Yardley published _The Education of a Poker Player_, full of anecdotes about poker games in which he had played as well as practical advice about how to win. It is regarded as a classic, and is still in print and is admired by serious gamblers and penny ante basement players. It was a good way for Yardley to bow off the world's stage, but is not his lasting monument. When it came time to start busting codes again as World War II loomed, no one had to be convinced that cryptanalysts were good sources of power. Yardley, the first American governmental cryptographer, had done his part to make America stronger through signal intelligence. He was an important and flawed figure who deserves more recognition; he has, surprisingly, had no biography written before, and Kahn's detailed and readable book will always be the definitive one on the subject. Help other customers find the most helpful reviews� Was this review helpful to you?�Yes No Report abuse | PermalinkComment Comment

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