 While the infantry fought in the hills, the PAVN artillery slammed 280 rounds of 122 mm rockets and 100 mm gunfire into the command post of the 12th Ranger Group, casualties were light, however.Fatigued and badly depleted, the 12th Ranger Group was relieved by the 54th Infantry, 1st Division.Through August and early September, the ARVN 54th Infantry made major advances even though the PAVN reinforced the 36th Regiment with the 1st Infantry.