Photo G3508  Members of the 3rd Platoon in a relaxed moment during their down time at the Soc Trang Detachment, 212th MP Company (Sentry Dog), 720th MP Battalion, 89th MP Group, 18th MP Brigade, Mekong Delta, Ba Xuyen Province, IV Corps Tactical Zone, Vietnam in 1969. Left to right: Unidentified, Unidentified, Unidentified, Unidentified, Unidentified, Unidentified. If you can identify any of these handlers, use this Email Link. Courtesy of the family of SP/4 Eric G. Osen, 212th MP Company (Sentry Dog), 720th MP Battalion, 89th MP Group, 18th MP Brigade, Long Binh Post & Soc Trang, Vietnam, 1969-1970.