On 25 July as Company I, 3/3 Marines patrolled 4 km west of Charlie-2 they were hit by mortar, Rocket propelled grenade and small arms fire from a position to the north.

[1]: 142–3 On 10 August a PAVN company attacked a two platoon Company E, 2/3 Marines night defensive position near Landing Zone Sierra, radio communication was lost forcing a halt to artillery support, leaving the Marines to defend the position with only small arms.

Meanwhile, 1 km southwest the PAVN attacked the 1st Platoon Company E 2/3 Marines position with mortar fire followed by a ground assault.

Company L withdrew with air artillery support and the next day after preparatory strikes overran the position finding 10 PAVN dead.

Three wounded PAVN soldiers were captured, all were aged between 14 and 16 years old, suffering from low morale and had received only one month's training before being sent into combat.

[1]: 147 On 10 September, despite a three-day ceasefire in observance of the death of Ho Chi Minh, 1st Platoon, Company I walked into a U-shaped ambush.

Supporting fires were minimal due to the ceasefire, however Company I overran the PAVN position finding seven dead.

[1]: 147 After midnight on 17 September the PAVN attacked Company L, 3/3 Marines night defensive position on Hill 154 (16°51′18″N 107°00′18″E / 16.855°N 107.005°E / 16.855; 107.005), briefly penetrating their perimeter.

The PAVN continued to attack Company I with sniper, machine gun and mortar fire killing four Marines.

[1]: 149 This article incorporates public domain material from websites or documents of the United States Marine Corps.