Cryptologic History

"On This Date in Cryptologic History" Calendar

1918: "Champlain" Field Codes Released.

Tuesday, October 7, 2025

7 October 1918: First in the "Lakes" series of field codes, "Champlain," was released.

Learn About the Pioneers

Learn about the various individuals and groups who paved the way in the field of cryptology, cyber, computers, and more.