During the Vietnam war, an army sergeant rebels against his tyrant commanding officer, whilst they are cut off by the enemy in the jungle. Things get worse for all of them after that.
Document-stealing killer super ninjas are up to no good. A more robust and secure records management system could have discouraged such behavior.
Superb action set during the Vietnam War. The prologue shows a French army convoy being ambushed by the Vietcong in 1950.