8th Radio Research Field Station

The 8th Radio Research Field Station was a United States Army signals intelligence unit active during the Vietnam War. Established in the early 1960s and based at Phu Bai, South Vietnam, the unit was tasked with intercepting, analyzing, and exploiting enemy communications. Its efforts provided critical intelligence on North Vietnamese and Viet Cong activities, greatly aiding U.S. and allied military operations in the region. The unit operated until 1972, when U.S. ground combat forces withdrew from Vietnam, and its mission was either closed or transitioned to South Vietnamese control.