 The morning of December 30 , the 4th South Vietnamese Marine Battalion moved out to <unk> <unk> Air Base , waiting to be <unk> 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 Viet Cong began withdrawing to the northeast . That afternoon the 4th Marine Battalion recaptured the village , but the Viet Cong was nowhere to be seen , as all their units had withdrawn from the village during the previous night , linking with other Viet Cong elements in the forest to attack the government relief forces . On the evening of December 30 , the Viet Cong returned Bình Giã and attacked from the south @-@ eastern perimeter of the village . The local villagers , who discovered the approaching Viet Cong , immediately sounded the alarm to alert the ARVN soldiers defending the village . The South Vietnamese were able to repel the Viet Cong , with support from U.S. Army helicopter <unk> flown out from <unk> <unk> airbase . 
