 The patrol returned fire and requested reinforcement, while simultaneously calling in preplanned artillery fires.Within minutes a platoon from Company A, 1st Marines, accompanied by three M48 tanks, moved out of positions 1 km away and headed south to assist.The coordinated attack, which included more than 150 rounds of 105mm artillery, 40 rounds of 4.2-inch mortar, 75 rounds from the 90mm guns of the tanks, and airstrikes by Marine UH-1E gunships accounted for several NVA dead.