The enemy has made a consistent two-day effort to destroy friendly outpost positions. Last night, at 1830, two enemy companies were observed in an apparent attempt to attack OPs 39 and 33. Artillery fire broke up the attempt, but continued enemy artillery today indicates further attack is probable tonight. If enemy artillery preparation is indicative, a simultaneous attack against outposts 39, 51, 33, and 31 can be considered probable....[298]
[298] KMC Regt UnitRpt 243, dtd 31 Oct 52, pp. 5–6.
These earlier observations and predictions as to the enemy’s action were shortly confirmed when the CCF launched its new ground attack.
Beginning at 2200,[299] the enemy delivered an intensive eight-minute 76mm and 122mm artillery preparation against the four outposts. Chinese assault forces from four different infantry regiments then launched a simultaneous attack on the positions. Moving in from the north, west, and south, two CCF companies (3d Company, 1st Battalion, 581st Regiment and 2d Company, 1st Battalion, 582d Regiment) virtually enveloped the northern outpost, COP 39. Two more CCF companies (unidentified) lunged against the two central outposts, COPs 33 and 31, a company at each position.[300] The southern and most-heavily defended post, COP 51, where a company of Korean Marines was on duty, was assailed by four Chinese companies (4th Company, 2d Battalion, 584th Regiment; 4th and 6th Companies, 2d Battalion, 585th Regiment; and 1st Company, 1st Battalion, 585th Regiment). Even though the enemy exerted his strongest pressure against COP 51, the position held and the Chinese broke off the attack there earlier than at the other outposts.
[299] The attack on the 31st took place after the KMC 5th Battalion had taken over the right regimental sector, at 1700, from the 3d Battalion. The Chinese often deliberately timed their outpost attacks to coincide with a relief of lines. Company personnel of both the 5th and 3d Battalions were on line during the fighting. KMC Regt UnitRpts dtd 1 Nov 52, p. 4; 245, dtd 2 Nov 52, p. 4.
[300] KMC Regt UnitRpt 244, dtd 1 Nov 52, pp. 1, 4. A different account as to size of attacking units is given in Maj Kang Shin Ho, ROKMC ltr to Dir, MCHist, HQMC, dtd 30 Apr 70, which states two reinforced enemy companies assaulted COP 33 and an estimated enemy battalion struck COP 31.
At COP 31 a heavy fire fight raged until 0155, when the defending KMC platoon halted the Chinese and forced them to make a partial withdrawal. To the northwest, at COP 33, the enemy encountered less resistance from the two squads manning the outpost. The Chinese achieved some success in penetrating the defenses and occupied several positions. After heavy close fighting and friendly artillery support, the Koreans expelled the invaders at 0515.
The enemy’s efforts appeared to have been most successful, temporarily, at COP 39, the northern post and one nearest to Hill 155. Although the Chinese wrested some ground from the KMC platoon, artillery fires continued to punish the enemy and by 0410 had forced him to pull back. A small hostile force returned at 0600 but after a 15-minute exchange of small arms it left, this time for good. At about this same time the last of the Chinese had also withdrawn from the two central outposts, 33 and 31.
In terms of sheer numbers, the enemy’s strongest effort was made against COP 51. This was the most isolated of the Korean positions and, at 2,625 yards, the one farthest from the MLR. Ironically, in the week preceding the attack COP 51 was least harassed by hostile artillery although it had received 20 rounds of 90mm. tank fire, more than any other position. On the 31st, elements of three companies struck the southwestern trenches and defenses, while a fourth attempted to break through from the north. As it turned out the action here was the least intense of the outpost clashes. After initial heavy fighting the Chinese seemed reluctant to press the assault even though they vastly outnumbered the Korean company deployed at the outpost. In the early morning hours the enemy broke contact and by 0330 had withdrawn from COP 51.
During the night approximately 2,500 rounds of CCF artillery and mortar fire lashed the positions. Korean Marines, aided by friendly artillery, repelled the assault and inflicted heavy casualties on the enemy. Supporting fires included more than 1,200 rounds of HE shells from the KMC 4.2-inch Mortar Company. Chinese casualties were listed as 295 known killed, 461 estimated wounded, and 9 POWs. Korean Marine losses were 50 killed, 86 wounded, and 18 missing.[301] By first light the Korean outposts had thrown back the enemy’s latest well-coordinated attack. This ended the last significant action of October in the 1st Marine Division sector.