Battle for FSB 31 (25 FEB 71) - Divided Ground - Vietnam

To strengthen the security of Fire Support Base 31, which was a more important position and seemed to be more heavily threatened because it housed the 3d Airborne Brigade headquarters, plans were made to helilift the 6th Airborne Battalion to a mountain range northwest of the base on 13 February. This mountain range controlled a valley running a south-easterly course to Fire Support Base 31 and the valley was the source for attacks by fire against friendly positions. At 1100 hours on 25 February, Fire support Base 31 received massive attacks by fire, including fire from 130-mm field guns. At 1300 hours, the 31st Company to the south reported enemy armored movements. The base responded with artillery fire and called for artillery support from Fire Support Bases 30 and A Luoi. The forward air controller's aircraft (FAC 229) was not in the air because of a confusion in grid coordinates and did not arrive until 1400 hours. By that time, fire from small weapons was being received from all directions and enemy tanks had reached the southern perimeter of the base. The first flight of fixed wing tactical aircraft to reach the base destroyed a number of enemy tanks on the spot and held back the armored thrust against the southern perimeter. At 1520 hours, an estimated 20 tanks supported by enemy infantry troops moved in from the northwest and the east. At precisely the same time, an F-4 aircraft was hit and erupted in flames but the pilot ejected. The Hammer FAC aircraft left its position to direct effort to rescue the U.S. pilot, interrupting air support for Fire Support Base 31. After a fierce artillery barrage, the enemy assaulted. At that time, a helicopter of the advisory team for the Airborne Division was the only aircraft flying overhead. It turned its M-60 machinegun fire on the enemy but it was in vain! Artillery from A Luoi and Fire Support Base 30 continued to fire in support but could not stop the enemy tanks attacking on the hill slopes. Forty minutes later, the base was overrun. It is possible that had the FAC remained on station above the battle that U.S. airpower could have been employed to hold the firebase. A number of airborne troops managed to break out but the commanders of the 3d Airborne Brigade and 3d Artillery Battalion were captured by the enemy. The weather thereafter worsened and aircraft could not provide support. ARVN losses at Fire Support Base 31 were 155 killed and missing with a corresponding number of individual weapons and six 105-mm howitzers