On October 3, 1952, a defecting lieutenant from the Chinese People's Volunteer Army (PVA) 340th Regiment, 114th Division under interrogation revealed that an attack on White Horse Hill was imminent.

On the flanks of White Horse Hill he positioned the tanks and antiaircraft guns to cover the valley approaches.

The PVA responded by opening the floodgates of the Pongnae-Ho Reservoir, which was located about 7 miles (11 km) north of the hill, evidently in the hope that the Yokkokchon which ran between the ROK 9th and the U.S. 2nd Infantry Division would rise sufficiently to block reinforcements during the critical period.

Again the Chinese losses were heavy and a prisoner later related that many of the companies committed to the attack were reduced from 190-200 to less than 20 men after the second day of fighting.

On White Horse Hill, the PVA kept funneling their combat troops into the northern attack approaches where Eighth Army artillery, tanks, and air power would wreak havoc.

The Chinese determination to win White Horse Hill made sitting ducks out of their infantry as the IX Corps defenders saturated the all-out assaults with massed firepower of every caliber.

On 13 October under close-range air cover by 141 warplanes, the 28th Regiment was committed to Nakta-neungaseon, but the strong PVA resistance forced it to withdraw to White Horse Hill six hours after the attack on the ridge had begun.

Chinese sources claim that the 38th Army was ordered during the night of the 14th to abandon the action due to the start of the Battle of Triangle Hill which the PVA was determined to win.

Chinese sources claim that the 9th Infantry Division committed four regiments and suffered a total of 9,400 casualties with almost 7,000 identified deaths.

[8] [9][10] Arrowhead Hill had previously been selected for both Koreas to jointly conduct a pilot remains recovery project.