Continuity mistake: Within the first 15 mins of the film the leader of the bad guys runs back to his car which has its front wheels buried in sand. A moment later the car pulls away with its wheels magically unburied.
Continuity mistake: Throughout the movie, Cottonmouth Joe's horse changes from a tan Arabian to a black Clydesdale during attack sequences.
Continuity mistake: During the showdown's sword fight between Lansing and Faisal in the palace hall, there is a far-off shot in which the blade of Lansing's sword can just barely be seen bending off at an unnatural angle, revealing it as a prop. For the rest of the duel, the sword is shown intact. (01:16:44)
Other mistake: When Rebecca, Audrey, Kathryn, May, and Sid are surprised when Ash goes over to Rafe, Rebecca's computer moves, but the background that it shows does not reflect this movement. (00:38:31)
Factual error: Throughout the film, Lieutenant Choi and his platoon use a radio with a handset to communicate with their base. The radio however has an H-250 handset, which wasn't introduced until 1987, and the film takes place in 1972. The radio handset should be the H-189, which is the correct model for the Vietnam war from 1966 onwards.
Continuity mistake: Yugi looks at a few pieces of paper to see if it will help him put the pieces of the Millennium Puzzle together. After he puts the papers down, his left hand is empty. Then there is a close-up of him looking at one of the pieces. His left shoulder isn't shown moving in the close-up, but in the shot after that, he is holding a puzzle piece in his left hand, which wouldn't have been possible to pick up with his hand if his shoulder didn't move. (00:01:08)