508th ASA Korea

The 508th Army Security Agency (ASA) Detachment was a U.S. Army signals intelligence unit stationed in Korea during the Cold War. Activated in the early 1960s, the 508th ASA’s primary mission was to intercept, analyze, and relay communications intelligence concerning North Korean and other regional military activities. The unit operated various listening posts and worked closely with Republic of Korea forces to enhance allied situational awareness along the Demilitarized Zone (DMZ). The 508th ASA remained a key component of U.S. intelligence efforts in Korea until its inactivation and integration into successor military intelligence units in the late 1970s.