Footage from Vietnam: M48 Patton tanks engage Viet Cong attackers in a fierce firefight on a bridge outside Huế. The air vibrates with the thunder of 90mm guns, their recoil flashing against the smoke and debris of the fight. Infantrymen move between the tanks, returning fire as tracer rounds streak across the span. Listen to the 90mm roar — the sound of American armor holding the line under fire, steel against shadow on the road to Huế. Sound by Ghosts of the Battlefield. All rights reserved. #