Main Force Assault follows the Marines and Popular Forces of Combined Action Platoon T-9 as they continue their mission to protect the villagers of Bun Hou from the Viet Cong, and corrupt South Vietnamese officials. Following combat in the first book in the series, Knives in the Night, CAP Tango Niner has several replacements, including a new lieutenant, who has to be taught how to be a leader.
