However the 523rd ASA based out of Fort Snelling, Minnesota was active until 1977, when it was deactivated and reformed as the 147th MI Bn (CEWI) under the 88th USARCOM.

[4] Composed of soldiers trained in radio communication, cryptography, military intelligence and linguists trained at the Defense Language Institute located at the Presidio of Monterey, California, the ASA was tasked with monitoring and interpreting military communications of the Soviet Union, the People's Republic of China, and their allies and client states around the world.

The ASA was directly subordinate to the National Security Agency, and all major field stations had NSA technical representatives present.

Other sites included Chitose, Japan; Sinop, Turkey; Kagnew Station, Ethiopia, and the Panama Canal Zone.

A former field station outside Harrogate, England, in what is now North Yorkshire, was a primary listening post that the US turned over to the British in the postwar years.

During the height of the Cold War, personnel from the 326 ASA Company stationed at Ft. Bragg, North Carolina, relocated classified mobile communications equipment to Homestead Air Force Base in Miami–Dade County, Florida.

The first ASA soldier to be killed on the battlefield in Vietnam was Specialist 4 James T. Davis (from Livingston, Tennessee).

ASA personnel were attached to Army infantry and armored cavalry units throughout the Vietnam War.

"Menwith Hill Station: A Case Study in Signal Intelligence Gathering During the Cold War" (PDF).

Former Country singer Don Williams was part of the United States Army security agency.