Evidence of increasingly heavy PAVN commitments in Long Khánh flowed into III Corps headquarters in Bien Hoa. The PAVN 141st Regiment, 7th Infantry Division had apparently participated in the attack on Định Quán. Hoai Duc was overrun by the PAVN 812th Regiment, 6th Infantry Division, while that division's other two regiments, the 33rd and 274th, seized Gia Ray. The ARVN outpost on the conical peak of Chua Chan, standing above Xuân Lộc and providing excellent observation, also fell to PAVN 6th Infantry Division forces and Xuân Lộc itself began to receive artillery fire, including 105 mm fire. III Corps commander Lieutenant General Nguyễn Văn Toàn responded to the burgeoning threat on his eastern flank first by sending the 5th Armored Cavalry Squadron and then one battalion of the 48th Regiment from Tây Ninh to Long Khánh. The rest of the 48th Regiment was still heavily engaged near Go Dau Ha. The 3rd Battalion made contact with a PAVN company west of the Vàm Cỏ Đông River on 17 March, killed 36, and captured a number of weapons. On 26 March Toàn sent the headquarters and two battalions of the 48th Regiment to reinforce Khiem Hanh.