The morning of December 30, the 4th South Vietnamese Marine Battalion moved out to Bien Hoa Air Base, waiting to be airlifted into the battlefield. The 1/4th Marine Battalion was the first unit to arrive on the outskirts of Bình Giã, but the 1st Company commander decided to secure the landing zone, to wait for the rest of the battalion to arrive instead of moving on to their objective. After the rest of the 4th Marine Battalion had arrived, they marched towards the Catholic church to relieve the besieged Rangers. About one and a half hours later, the 4th Marine Battalion linked up with the 30th, 33rd and 38th Ranger Battalions, as the VC began withdrawing to the northeast. That afternoon the 4th Marine Battalion recaptured the village, but the VC was nowhere to be seen, as all their units had withdrawn from the village during the previous night, linking with other VC elements in the forest to attack the government relief forces. On the evening of December 30, the VC returned to Bình Giã and attacked from the south-eastern perimeter of the village. The local villagers, who discovered the approaching VC, immediately sounded the alarm to alert the ARVN soldiers defending the village. The South Vietnamese were able to repel the VC, with support from U.S. Army helicopter gunships flown out from Vung Tau airbase.