On 12 April the battalions of the 52nd Regiment were still engaged in heavy fighting north of Xuân Lộc, but the town, although demolished, was still held by the 43rd Regiment. PAVN losses to that point were probably in excess of 800 killed, 5 captured, 300 weapons captured and 11 T-54 tanks destroyed. ARVN casualties had been moderate. Most of the 43rd Regiment was holding east of the town; the 48th was southwest; the 1st Airborne Brigade was south but moving north toward the 82nd Ranger Battalion; and the 322 Task Force was on Route 1 west of the Route 20 junction attacking toward Xuân Lộc. Two resupply missions were flown into the besieged town; on 12 April CH-47 helicopters brought in 93 tons of artillery ammunition and followed with 100 tons the next day. Meanwhile RVNAF airplanes flying against intense antiaircraft fire, took a heavy toll of the PAVN divisions around Xuân Lộc flying over 200 sorties. At 14:00 on 12 April RVNAF C-130 Hercules dropped two BLU-82 Fuel Air Explosive bombs on PAVN positions in the town of Xuan Vinh, close to Xuân Lộc, killing about 200 PAVN soldiers. The Joint General Staff made the decision to bolster the defences at Xuân Lộc with units drawn from the general reserve. Subsequently, the ARVN 1st Airborne Brigade arrived at the Bao Dinh rubber plantation, while two Marine battalions defended the eastern corridor leading to Bien Hoa. In addition, Tan Phong and Dau Giay received reinforcements from the 33rd Ranger Battalion, 8th Battalion, 5th Division, 8th Artillery Battalion and three armored brigades (315th, 318th and 322nd Armored Brigades). As the reinforcements were making their way onto the battlefield, RVNAF fighter-bombers from Bien Hoa and Tan Son Nhat flew between 80 and 120 combat sorties per day to support the defenders at Xuân Lộc.