HISTORY TODAY 10 NOVEMBER 2015

Daily Enterprise - (U) HISTORY TODAY - November 10, 2015 Page 1 of 2Doc ID: 6660665UNCLASSIFIED(U) HISTORY TODAY - November 10, 2015FROM: CCHRun Date(s): 11/10/2015(U)_A look inside the SIS: cryptanalysis, PURPLE, and MAGIC duringWorld War lI[} (U) In the last weeks before the United States entered World War II, the Signal/¢ Intelligence Service (SIS), the Army’s cryptologic organization, had an important visitor.(U) The SIS had been established in 1930, and its chief was William F. Friedman, th...