May 7, 1954: Dien Bien Phu campaign marks complete victory At 4 am on May 7, 1954, Regiment 174 completely controlled Hill A1 (Eliane 2). At 9 am the same day, Regiment 98 attacked and completely destroyed C2 Base (Eliane 4), capturing 600 enemies. Regiment 165 completed the mission of destroying Base 506 (Eliane 10), north of Muong Thanh. 08:52 | 07/05/2024