The date is 10 May 1966. Having successfully conducted search and destroy operations against a number of VC supply caches in the central river valley, Broadsword Platoon has been given a new assignment. After the unfortunate friendly fire incident with a Marine platoon, Broadsword is being sent to assist a trapped Marine combat engineer unit that is under siege behind enemy lines in preparation for an attack on the notorious NVA stronghold of Hill 220. The platoon is to land nearby, relieve the siege, and escort the sappers as they clear the way to assault the Hill proper, including destroying a nearby anti-air site.