 "All total, there was a reinforced PVA regiment of approximately 3,600 enemy trying to kill us," said Captain Markley.Despite an intense barrage of defensive firepower and the detonation of Napalm, the PVA stormed the slopes of the outpost and soon penetrated the trenches.When K Company got under cover in bunkers, UN Variable Time (VT) artillery was called in to stop the attack.