Army Security Agency (ASA) Veterans

We welcome veterans of the now-gone Army Security Agency, which was first created on September 15, 1945, in the immediate aftermath of World War II. ASA veterans John Peart and others will share their stories of service with this shadowy intelligence agency that played a critical role in the Cold War.

The Army Security Agency (ASA) operated under the authority of the National Security Agency (NSA) and was tasked with intercepting, analyzing, and exploiting enemy communications. Its mission included codebreaking, electronic intelligence gathering, direction finding, and secure communications. The ASA played a central role during the early Cold War period, collecting intelligence on the Soviet Union and its allies. ASA units were composed of highly trained personnel, often fluent in foreign languages, skilled in radio operations, cryptography, and electronic surveillance.

The ASA’s role expanded during the Korean War and reached a peak of operational activity during the Vietnam War. ASA personnel were deployed across Southeast Asia, conducting covert and direct support operations for U.S. and allied forces. They established field stations and remote intercept sites near conflict zones and along the Ho Chi Minh Trail. Using direction-finding equipment and advanced signal processing tools, they intercepted enemy radio traffic, provided early warning of enemy movements, and monitored North Vietnamese and Viet Cong communications. Their intelligence was vital to strategic planning and tactical decision-making.

One of the most significant and symbolic events involving the ASA during the Vietnam War was the death of Specialist 4 James T. Davis on December 22, 1961. Davis, part of the 3rd Radio Research Unit—the ASA cover name in Vietnam—was on a joint operation with South Vietnamese forces near Saigon when his convoy was ambushed. He and ten South Vietnamese soldiers were killed. Davis became the first American battlefield casualty of the Vietnam War recognized by the Department of Defense. His death marked a turning point, highlighting the increasing U.S. involvement in Vietnam and the dangerous nature of ASA missions in the field. The ASA compound at Tan Son Nhut Air Base was later named “Davis Station” in his honor.

Throughout the Vietnam War, ASA personnel worked in close coordination with the Central Intelligence Agency (CIA), Air Force Security Service, and Navy intelligence units. Their work remained classified for decades. Despite the high-risk nature of their missions, ASA soldiers were generally non-combatants operating in a military intelligence capacity, though many saw combat or were exposed to hostile fire due to their proximity to enemy forces.

The ASA continued its global intelligence operations through the 1970s but was eventually dissolved in 1977. Its functions were absorbed into the U.S. Army Intelligence and Security Command (INSCOM), consolidating Army intelligence efforts under a single command structure. Though no longer active, the ASA’s legacy endures in the modern electronic warfare and signals intelligence capabilities of the U.S. Army.

We’re grateful to UPMC for Life  for sponsoring this event!