The heavy fighting raged throughout the afternoon. Lieutenant Colonel Alderman, his operations officer, Major Matthew P. Caulfield, and representatives of the Fire Support Coordination Center (FSCC) flew from Khe Sanh to Hill 881S by helicopter so they could personally oversee the battle. During the action, Company I drew heavy support from the recoilless rifles, mortars, and 105mm howitzers on Hill 881S, as well as the batteries at Khe Sanh. In addition, Marine jets armed with 500-pound bombs streaked in and literally blew the top off of the easternmost enemy hill, while other fighter/bombers completely smothered one NVA counterattack with napalm. A CH-46 helicopter from Marine Aircraft Group 36 was shot down while attempting to evacuate casualties but another Sea Knight swooped in and picked up the pilot and copilot. The crew chief had jumped from the blazing chopper while it was still airborne and broke his leg; he was rescued by Lieutenant Fromme's men. This, however, was the only highlight for the North Vietnamese because Company I had cracked the center of their defense and, under the savage air and artillery bombardment, the rest of the line was beginning to crumble.[(46)]

Lieutenant Colonel Alderman realized that his men were gaining the advantage and requested reinforcements with which to exploit the situation. Colonel Lownds, however, denied the request and directed the 3/26 commander to pull Company I back to Hill 881S immediately. The order was passed on to Captain Dabney and it hit him like a thunderbolt. His men had been fighting hard all day and he hated to tell them to call it off at that point. Nonetheless, he rapidly disengaged, collected his casualties, and withdrew. The struggle had cost the enemy dearly: 103 North Vietnamese were killed while friendly losses were 7 killed, including two platoon commanders, and 35 wounded. As the weary Marines trudged back to Hill 881S, they were understandably disappointed at not being able to continue the attack. It wasn't until later that they learned why they had been halted just when victory was in sight.[19][(47)]

Colonel Lownds' decision to break off the battle was not born out of faintheartedness, but was based on a valuable piece of intelligence that he received earlier in the afternoon. That intelligence came in the form of a NVA first lieutenant who was the commanding officer of the 14th Antiaircraft Company, 95C Regiment, 325C NVA Division; at 1400, he appeared off the eastern end of the runway with an AK-47 rifle in one hand and a white flag in the other. Under the covering guns of two Ontos, a fire team from the 2d Platoon, Company B, 1/26, took the young man in tow and, after Lieutenant Colonel Wilkinson had questioned him briefly, the lieutenant was hustled off to the regimental intelligence section for interrogation. The lieutenant had no compunction about talking and gave the Marines a detailed description of the forthcoming Communist offensive. As it turned out, the accuracy of the account was surpassed only by its timeliness, because the first series of attacks was scheduled for that very night--against Hills 861 and 881S. At the time Colonel Lownds received this news, Company I was heavily engaged 1,000 meters north of its defensive perimeter and he definitely did not want Captain Dabney and his men to be caught away from their fortified outpost when the NVA struck. Consequently, Lieutenant Colonel Alderman's request for reinforcements to press his advantage was denied.[(48)]

When the first enemy rounds began falling on Hill 861 shortly after midnight, Marines all along the front were in bunkers and trenches--waiting. The heavy mortar barrage lasted about 30 minutes and was supplemented by RPG, small arms, and automatic weapons fire. This was followed by approximately 300 NVA troops who assaulted Hill 861. The van of the attacking force was made up of sapper teams that rushed forward with bangalore torpedoes and satchel charges to breach the defensive wire. Assault troops then poured through the gaps but were met and, in most sectors, stopped cold by interlocking bands of grazing machine gun fire.

In spite of the defensive fire, enemy soldiers penetrated the K/3/26 lines on the southwestern side of the hill and overran the helo landing zone. The Company K perimeter encompassed a saddle, thus the crest of 861 was actually two hills; the landing zone was on the lower one and the company CP was perched atop a steep rise to the northeast. Before the enemy could exploit the penetration, the Marines counterattacked down the trenchline and pinched off the salient. After vicious hand-to-hand fighting, the men of Company K isolated the pocket and wiped out the North Vietnamese. Had the enemy been able to flood the breach with his reserves, the situation might have become extremely critical. When the fighting subsided, 47 NVA bodies were strewn over the hilltop while four Marines died holding their ground.[20] [(49)]

During the attack on 861, the 3d Battalion command group remained on Hill 881S because bad weather prevented Lieutenant Colonel Alderman and his operations officer from returning to the combat base.[21] [(50)] Major Caulfield contacted the Company K command post by radio and found out that the fighting was indeed heavy. The company commander, Captain Norman J. Jasper, Jr., had been hit three times and was out of action; the executive officer, First Lieutenant Jerry N. Saulsbury, was running the show. The company gunnery sergeant was dead, the first sergeant was badly wounded, and the radio operator had been blinded by powder burns. Major Caulfield later recalled that the young Marine remained at his post for almost two hours before being relieved and was "as calm, cool, and collected as a telephone operator in New York City," even though he could not see a thing.[(51)]

Some men on the hill had a rather unusual way of keeping their spirits up during the fight as First Sergeant Stephen L. Goddard discovered. The first sergeant had been hit in the neck and was pinching an artery shut with his fingers to keep from bleeding to death. As he moved around the perimeter, the Top heard a sound that simply had no place on a battlefield--somebody was singing. After tracing the sound to a mortar pit, Goddard peered into the emplacement and found the gunners bellowing out one stanza after another as they dropped rounds into the tubes. The "ammo humpers" were also singing as they broke open boxes of ammunition and passed the rounds to the gunners. Naturally, the name of the song was "The Marines Hymn."[(52)]

One decisive factor in this battle was that Hill 881S was not attacked. Company I did not receive a single mortar round and the reprieve left the Marines free to lend unhindered support to their comrades on 861. The bulk of this fire came from the Company I 81mm mortar section. Since Lieutenant Colonel Alderman and Major Caulfield were concerned about the possibility of their position being attacked, they were careful not to deplete their ammunition. Major Caulfield personally authorized the expenditure of every 20-round lot so he knew exactly how many mortar rounds went out that night--680. The mortar tubes became so hot that the Marines had to use their precious drinking water to keep them cool enough to fire; after the water, the men used fruit juice. When the juice ran out, they urinated on the tubes. The spirited support of Company I and its attached elements played a big part in blunting the attack.[(53)]

There are two plausible explanations for the enemy's failure to coordinate the attack on Hill 861 with one on 881S. Lieutenant Colonel Alderman and Major Caulfield felt that Captain Dabney's fight on the afternoon of 20 January had crippled the NVA battalion which was slated for the attack on Hill 881S and disrupted the enemy's entire schedule. On the other hand, Company I had emerged from the engagement with relatively light casualties and was in fighting trim on the morning of the 21st. Another possibility was the manner in which Colonel Lownds utilized artillery and aircraft. The regimental commander did not use his supporting arms to break up the attack directly; he left that job up to the defenders themselves. Instead, the colonel called in massive air and artillery concentrations on points where the enemy would more than likely marshal his reserves. Much of the credit belong to Lieutenant Colonel Hennelly's batteries at the base. One infantry officer on Hill 881S, who observed the fire, described the Marine artillery as "absolutely and positively superb." Throughout the battle, the North Vietnamese assault commander was heard frantically screaming for his reserves--he never received an answer. The fact that the initial attack on 861 was not followed up by another effort lent credence to the theory that the backup force was being cut to pieces to the rear while the assault troops were dying on the wire.[(54)]

The Marines did not have long to gloat over their victory because at 0530 on the 21st the KSCB was subjected to an intense barrage. Hundreds of 82mm mortar rounds, artillery shells, and 122mm rockets slammed into the compound as Marines dived into bunkers and trenches.[22] [(55]) Damage at "ground zero" was extensive: several helicopters were destroyed, trucks and tents were riddled, one messhall was flattened, and fuel storage areas were set ablaze. Colonel Lownds' quarters were demolished but, fortunately, the regimental commander was not in his hut at the time. One of the first incoming rounds found its mark scoring a direct hit on the largest ammunition dump, which was situated near the eastern end of the runway. The dump erupted in a series of blinding explosions which rocked the base and belched thousands of burning artillery and mortar rounds into the air. Many of these maverick projectiles exploded on impact and added to the devastation. Thousands of rounds were destroyed and much of this ammunition "cooked off" in the flames for the next 48 hours. In addition, one enemy round hit a cache of tear gas (CS) releasing clouds of the pungent vapor which saturated the entire base.[(56)]