During the fighting at "Eliane" 1, on the other side of camp, the Viet Minh entrenchments had almost entirely surrounded "Huguette" 1 and 6. On 11 April the garrison of "Huguette" 1, supported by artillery from "Claudine", launched an attack with the goal of resupplying "Huguette" 6 with water and ammunition. The attacks were repeated on the nights of the 14–15 and 16–17 April. While they did succeed in getting some supplies through, the French suffered heavy casualties, which convinced Langlais to abandon "Huguette" 6. Following a failed attempt to link up, on 18 April, the defenders at "Huguette" 6 made a daring break out, but only a few managed to make it to French lines. The Viet Minh repeated the isolation and probing attacks against "Huguette" 1, and overran the fort on the morning of 22 April. After this key advance, the Viet Minh took control of more than 90 percent of the airfield, making accurate French parachute drops impossible. This caused the landing zone to become perilously small, and effectively choked off much needed supplies. A French attack against "Huguette" 1 later that day was repulsed.