In 1951, he returned to Indochina and took a prominent role in the Battle of Nà Sản (September–December 1952). He was promoted to brigadier general December 23, 1952 and became commander of TAPI (Airborne Troops in Indochina). He took part in Operation Castor, the early phase of the Battle of Dien Bien Phu in November 1953.