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Cryptologic History

Every little bit helps the NCF to influence the cryptologic future by sharing our educational resources, stimulating new knowledge, and commemorating our heritage.

"On This Date in Cryptologic History" Calendar

1943: Establishment of the 805th Signal Service Company for operation of the SIGSALY.

Monday, February 10, 2025

10 February 1943: Establishment of the 805th Signal Service Company for operation of the SIGSALY.

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