Priority of air support on 31 August was assigned to the two KMC battalions. They jumped off in column against light to moderate resistance, with Hill 924 as their first objective. Mine fields gave the KMCs more trouble at first than scattered NKPA mortar and machine gun fire. Forward movement and maneuver were restricted as 1/KMC passed through 3/KMC at 1445 to continue the attack against stiffening resistance.
On the right 3/7 also encountered light resistance in the morning which increased as the assault troops neared the objective. The slopes of Hill 702 proved to be heavily mined, and forward elements of 3/7 were hit by a concentration of mortar and artillery fire.
East of the river, on the regimental right flank, where Objective 1 had been occupied without a fight, 1/7 supported the attack of 3/7 with mortar fire. Both 3/7 and the KMCs were within 1,000 yards of their objectives late in the afternoon when a halt was called for the day. Casualties had been light, thanks in large measure to excellent air and artillery support.
When the attack was resumed on 1 September, 3/KMC moved through positions of 3/7 to reach a ridgeline on the flank of the regimental objective. While 3/KMC advanced from the northeast, 1/KMC closed in from the southeast. Both battalions took heavy losses from enemy mines and mortars as well as machine guns and automatic weapons fired from hidden bunkers. The converging attack made slow but steady progress, however, until one company of 3/KMC drove within 200 meters of the top of Hill 924 at 1700. Even so, it took four more hours of hard fighting to secure the objective. That evening 2/KMC was relieved of its defensive responsibility along the KANSAS Line by 3d Battalion, 5th Marines, enabling the KMC battalion to join in the attack.
Throughout the day 3/7 slugged it out in the vicinity of 702 with an NKPA battalion. Four counterattacks were launched from Hill 602, the northeastern fork of YOKE Ridge. More than 500 men were employed in this effort, some of them penetrating briefly into 3/7 positions. Two air strikes, called by patrols of 1/7 from across the river, helped to break up the main NKPA attack, and the 11th Marines (Colonel Custis Burton, Jr.), poured in a deadly concentration of artillery fire. Lieutenant Colonel B. T. Kelly’s battalion continued to be engaged until dusk.