"On This Date in History" Calendar
1949: Armed Forces Security Agency created.
20 May 1949: The Armed Forces Security Agency (AFSA), predecessor of NSA, was established within the Department of Defense, under the command of the Joint Chiefs of Staff. In theory, the AFSA was to direct the communications intelligence and electronic intelligence activities of the military service signals intelligence units (at the time consisting of the Army Security Agency, Naval Security Group, and Air Force Security Service). All cryptologic activities were centralized under this national organization. The AFSA was eventually re-designated as the NSA.
Learn more about the "Origins of NSA" via the NSA article linked below.