175th radio research Bien Hoa

The 175th Radio Research Company (175th RRC), based in Bien Hoa, Vietnam, was a United States Army signals intelligence unit active during the Vietnam War. Established in the mid-1960s, the unit specialized in intercepting and analyzing enemy communications as part of the Army Security Agency's support to combat operations. The 175th RRC worked closely with combat units and provided critical intelligence that contributed to the success of numerous operations in III Corps Tactical Zone. Renowned for its technical expertise and dedication, the unit played a vital role in disrupting enemy command and control networks until its deactivation following the drawdown of U.S. forces in Vietnam.