How an Improbable Source Clinched Allied Victory in 1944
How an Improbable Source Clinched Allied Victory in 1944

Summary/Abstract: The critical information that sealed the fate of Nazi Germany came from a team of fewer than six young civilians crowded in a small room in a ramshackle government building a few blocks from the White House. The youngest who called himself a mathematician had just finished high school; another was a graduate student in love with the Japanese language but had never visited Japan. Together they cracked the Japanese diplomatic code and deciphered the daily reports of Japan’s ambassador in Berlin sent to Tokyo. A committed Nazi and a retired general, Baron Hiroshi Oshima was a darling of German leaders, probably the only foreigner Adolf Hitler trusted. Oshima spent several days visiting the fortifications the Germans built to block an Allied invasion. Apparently, the Germans withheld nothing from him and he reported everything to his government.

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