While artillery, air, mortars, and tanks pounded the objective, assault elements of D/2/5 from the regimental reserve, under Captain John B. Melvin, prepared for jump-off. At 1120 the company crossed the line of departure in the 3/5 sector of the MLR and immediately came under heavy fires from enemy infantry and artillery units. Within a half hour after leaving the battalion front for Vegas, Dog Company had been pinned down by Chinese 76mm artillery, had picked itself up, and been stopped again by a plastering of 60mm and 82mm shells falling everywhere in its advance. By 1210 only nine men were left in Captain Melvin’s 1st Platoon to carry on the fight. The Marine unit continued to claw its way through the rain-swollen rice paddies and up the muddy slopes leading from the MLR to within 200 yards of the outpost. In 10 minutes, heavy incoming began to take its inevitable toll and enemy reinforcements were flowing towards Vegas from the CCF assembly point on Hill 153. Between noon and 1300, four enemy groups of varying size had pushed south from Hill 153 to Vegas. At this time still another group, of company size, moved in with its automatic weapons and mortars. Within the next 15 minutes, a reinforced CCF platoon made its way from the Reno trench to Vegas while still another large unit attempted to reinforce from Hill 21B. As enemy incoming swept the slopes and approaches to Vegas, Marine artillery and tank guns fired counterbattery missions to silence the Chinese weapons. In the skies, VMA-121 ADs and the sleek jet fighters from MAG-33 squadrons VMF-115 and -311 continued to pinpoint their target coordinates for destruction of enemy mortars, trenches, personnel bunkers, and troops. Back at the battalion CP two more companies were being readied to continue the Vegas assault. The Provisional Company of 2/5, commanded by Captain Floyd G. Hudson, moved out at 1215. Close on its heels, E/2/5 left the Company H checkpoint in the 3/5 sector for the zone of action. At 1305 the counterattack for Vegas was raging in earnest, with Company D riflemen on the lower slopes, chewing into the enemy with their grenades, BARs, M-1s, and carbines. Two hours after the original jump off time, four Marines crawled out of the trenches at Vegas and by 1322 were going over the top, despite incoming that “literally rained on the troops.” Assault commander Melvin recalled: It was so intense at times that you couldn’t move forward or backward. The Chinese 60mm mortars began to bother us about as much as firecrackers. It was the 120mm mortars and 122mm artillery that hurt the most. The noise was deafening. They would start walking the mortars toward us from every direction possible. You could only hope that the next round wouldn’t be on target.[373] [373] Fugate, “Vegas,” p. 20.