sentences:  Gia Lam and Bach Mai later became the two major logistics bases supporting French operations at the Battle of Dien Bien Phu.Much of the equipment sent to the remote French military base at Dien Bien Phu passed through Gia Lam airfield, including the ten French M24 Chaffee tanks assigned to the isolated stronghold in northwestern Vietnam, which were each dismantled into 180 individual parts and flown to Dien Bien Phu on heavy cargo aircraft.After their defeat at Dien Bien Phu and the following 1954 Geneva Peace Accords, French forces, obliged to leave Vietnam, handed over the airfield to the Viet Minh.