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Code Cracking Campus:
On the quiet grounds of a former Virginia girls' school, the US Army's Signal Intelligence Service cracked the Japanese Purple code. William Friedman's team of "magicians" celebrated their success -- after at least 18 months' work -- on September 20, 1940.
Arlington Hall Station was home to many Army intelligence divisions, and early in the war the campus had a guarded relationship with their British counterparts at Bletchley Park. But by May 1943, the two nations signed the first cooperative code-breaking agreement in history. |