After the ROK units pulled back, on 13 October a reinforced company from the US 7th Infantry Division attempted in vain to regain the lost positions.
The battalion won through to the crest and was able to maintain control until 20 October when PVA counterattacks regained possession of the hill for the next two days.
On 23 October, after a bitter hand-to-hand encounter, elements of the ROK 51st Regiment drove the PVA off again, repulsed a counterattack, then withdrew.
[1] Since their defeat in the Battle of Outpost Kelly the 65th Regiment had been undergoing a vigorous program of training under a new commander, Colonel Chester B.
Jackson Heights, as it was soon to be called, had enough bunkers to house the command posts of the three rifle platoons, the company headquarters, and the forward artillery observer, but none of these was adequate for fighting off an attack.
[1]: 307–8 On the afternoon of the 25th the artillery supporting the 87th Regiment began to send direct 76mm gunfire against the Jackson Heights positions from Camel Back Hill, 2,800 yards (2,600 m) to the northwest.
During the night the PVA sent out patrols that probed G Company's dispositions and continued to send harassing artillery and mortar fire onto Jackson Heights.
Late in the afternoon of 26 October the PVA sent over 260 rounds of direct 76mm gunfire from Camel Back Hill and caused 14 more casualties.
A PVA platoon probed the northern approach to Jackson Heights shortly after midnight, then fell back under interdicting artillery and mortar fire.
Jackson reported to 2nd Battalion that he needed aid for his wounded and wanted smoke laid about the heights to obstruct the PVA's ability to pinpoint the company's movements.
The second PVA assault of the evening came after the Chinese artillery and mortar crews had fired an estimated 1,000 rounds at Jackson Heights within half an hour.
At this point the company communications sergeant evidently reported that there were only three men left in the platoon in his area and asked battalion for permission to withdraw.
When Jackson learned of the withdrawal order, he attempted to verify it, but the communications lines were out and radio contact proved unsatisfactory.
His platoon ran into heavy PVA small arms fire on the way and he was separated from his men during the action, finally rejoining them on the trail back to the Jamestown Line.
The PVA platoon defending the hill resisted with small arms, automatic weapons and hand grenades, but F Company won control of the crest by 10:00.
Major general George W. Smythe, the division commander, ordered the US 15th Infantry Regiment to take over responsibility for the 65th's sector beginning that same night.
If neither of these alternatives were possible, Smythe went on, he favored the reconstitution of the Regiment with 60 percent mainland US personnel and the assignment of the excess Puerto Ricans to other infantry units.