8th RRFS

The 8th Radio Research Field Station (8th RRFS) was a U.S. Army signals intelligence unit active during the Vietnam War. Located at Phu Bai, just south of Hue in central Vietnam, the unit played a critical role in intercepting and analyzing North Vietnamese communications. Established in 1963, the 8th RRFS supported both tactical and strategic operations by providing vital intelligence to U.S. and allied forces. The station operated until 1972, when U.S. forces withdrew from Vietnam, and was pivotal in several major campaigns, including the Tet Offensive.