Continuity mistake: When Eva is being choked, at one point the guy is choking her on her bare skin and in another shot, she is being choked over her shirt collar.
Continuity mistake: When Dirk is talking to the rebel leader, while he is loading up the truck, his arms go from being down by his side in one shot to instantly having his hands on his hips in the next.
Continuity mistake: In the first boat chase scene a truck comes along the bank of the river with a machine-gunner on the back. When the driver of the vehicle is shot by Rudy with the flare gun, the truck is seen and smoke pours out of the truck's cab to the point where it's hard to see the machine-gunner on the back. Then in the shot where the truck is seen from the boat, there is no smoke at all. Then in the shot of the truck, the smoke is pouring out of the truck's cab again.
Continuity mistake: Dirk, Al, and Eva are trapped in the Civil War ironclad. Dirk sends Eva to find fuses for the 150 year old cannon on board the ship. She runs across the room, falls through rotten decking to the deck below and is completely covered with sand. In the next shot as Eva gains her composure from the fall, the sand has disappeared.
Continuity mistake: When the boys are tied in the pickup truck, the truck is moving forward. In the first top down shot of the boys, if you look closely at the ground the truck is moving backwards.