Overnight most Airborne battalions were in contact with the PAVN, with the 1st Battalion killing 80 PAVN and capturing five for 18 casualties, while the 2nd Battalion lost 18 killed. The Marines at FSB Delta endured further attacks but killed 42 PAVN. On the morning of 19 March the ARVN abandoned FSB A Luoi with the armored-airborne column moving east to positions near FSB Alpha (). North of FSB A Luoi the 8th and 9th Airborne Battalions engaged units of the PAVN 308th and 320th Divisions. At 07:30 a FAC saw four PAVN tanks 2km north of A Luoi. An 18 vehicle ARVN convoy was ambushed 4km east of A Luoi with the lead vehicles destroyed by direct fire, blocking Route 9. Four M41 tanks and three M113 APCs each towing a 105mm gun were among the vehicles stranded and airstrikes were called in to prevent them being used by the PAVN. In the Marine area the 2nd and 4th Battalions were intercepted as they withdrew towards FSB Delta and artillery fire destroyed five of the ten howitzers at the base. FSB Delta 1 was hit by numerous rockets and artillery rounds disabling four 105mm guns and causing 1,400 106mm rounds to explode. The 2nd, 3rd and 4th Battalions, 2nd Regiment operating near LZ Brown were involved in fighting throughout the day and into the night, supported by AC-130 gunships. At midnight the three battalions reported having consolidated their positions with the 3rd Battalion reporting 47 casualties while killing 87 PAVN and capturing 49 AK-47s; the 2nd Battalion had killed 85 PAVN and captured 47 AK-47s; and the 4th Battalion reported killing 195 PAVN and capturing 59 AK-47s. U.S. air support during the day included 686 helicopter gunship sorties, 246 tactical air strikes and 14 B-52 strikes.