Herbert Osborne Yardley


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World War I

Chiang Kai-shek (1887—1975) Chinese statesman and general, President of China 1928–31


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(1889–1958) born in Worthington, Indiana, the cryptographer responsible for the U.S.'s first official code-breaking activities during and following World War I. He entered the U.S. State Department at 23 as ...

Subjects: Warfare and Defence.

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