From the publisher's website:

"Ambush Valley provides Force on Force players with all the theater specific rules necessary to bring the tense engagements of the Vietnam conflict to life on their tabletop, including campaign rules which will allow players to track the development of a platoon as it fights its way through a series of missions.

In addition to theater specific rules, Ambush Valley also contains example organizations and vehicle write-ups for the US Army, USMC, ANZACs, ARVN, ROK, Local and Main Force VC and NVA. Also included are six scenarios ranging from simple patrols to mechanized infantry assaults." Ambush Valley is a stand-alone game, companion to Force on Force.