A motley crew of Louisiana National Guardsman wade out into the swamps for weekend maneuvers. It’s 1973, as the war in Vietnam is grinding away the soul of America and the heart of the military, and this platoon of weekend warriors–a volatile collection of rednecks, hotheads, jokers, and guys who probably signed up to steer clear of the draft–are like fresh recruits going into battle for the first time. They’ve got the fatigues and the cocky attitude but dubious discipline and training and their machine guns are loaded with blanks as they head into the bayou. To the Cajun swamp folk, the trappers and hunters living on the fringes of society, these men are invaders who trample their camps and steal their boats. And when one of the soldiers lets loose a burst from his weapon, laughing like the class bully after humiliating the new kid, these shadowy swamp dwellers defend themselves, becoming a guerilla strike force waging a war of terror on the utterly unprepared toy soldiers. They don’t know that it’s just blanks in those guns but it likely wouldn’t matter if they did. They’ve been attacked and they will respond. These city dwellers are out their element and after their commanding officer (Peter Coyote) is gone, the first casualty in the war of attrition, they are out of their depth, flailing around with a panic that dumps their radio, compass, map, and pretty much everything else that was supposed to keep them alive.
Southern Comfort will never be mistaken for a Nation Guard recruitment tool. Call it an anti-platoon movie. Hill gives the squad the outward accoutrements of a real fighting force, down to the uniforms and weapons, but this is a military unit in name only.