Gabrielle Hill. B/W file picture taken by Viet Minh army we see the dead bodies of French troops on Gabrielle Hill and on the background a monument for Vietnamese fallen soldier. On 15/Mar/1954 Viet Minh army start the attack at 2:00 AM and ended at 6:30 AM under heavy rain. Over 2,000 Viet Minh were killed in these assaults. Vietnam-Dien Bien Phu.