Photo G3025: Members of B Company, 720th MP Battalion, 89th MP Group, 18th MP Brigade, Blackhorse (Xuan Loc) Detachment at the 11th Armored Cavalry Regiment base camp in Long Khan Province, III Corps Tactical Zone, Vietnam in 1968. SGT William E. Harford (left), Unidentified. SGT Bill Harford (left), Unidentified. If you can provide any identifications use this Email Link. Courtesy of SGT William E. Harford B Company, 720th MP Battalion, 89th MP Group, 18th MP Brigade, Vietnam, September 1968-August 1969.