Continuity: When Sgt. King steals Steve's jeep the top is down. Sgt. King is in a hurry, yet when he shows up at his destination in the next shot, the top of the jeep is up. Jeep tops take at least 10 minuets of tedious work to put up, and it was sunny all day, so it could not have been put up due to rain.
Errors made by characters (possibly deliberate errors by the filmmakers): During the Humvee-car chase sequence at the beginning of the film the character "Rico" has no ammo magazine in his rifle during the whole scene.