Photo G2968: SP/4 Robertson of the A Company, 720th MP Battalion, 89th MP Group, 18th MP Brigade, Bearcat Detachment, and a CPl Bruce Meakins of the Australian Army Signals at the base camp in Vietnam, 1969. If you can provide further information on Robertson, use this Email Link. Courtesy of SP/4 Eugene G. Guilford, A Company, 720th MP Battalion, 89th MP Group, 18th MP Brigade, Vietnam, August 1968-August 1969.