Continuity mistake: In a major fight scene two soldiers on opposite sides are jumping and spinning and tapping each other on the head with their swords.
Revealing mistake: When Chris Tucker is found dead from an apparent heroin overdose, you can see him still breathing on the chair.
Continuity mistake: The pictures of Sara's parents in the locket switch places throughout the movie.
Continuity mistake: Near the beginning of the film, Keanu Reeves gives Victoria a fake wedding ring from one of the chocolates. Previously, you can see that he is wearing his real one. When he puts another ring from the chocolate on his own finger, his original one is gone.
Revealing mistake: After Richard has accepted that he will be king, he appears before a large assembly. Several of the soldiers standing by the walls are obviously plastic dummies. They have unnaturally smooth and blank facial features, and when you can see their hands, they are not grasping their guns, but merely holding their hands stiffly out with the gun between them.
Factual error: When Lt. Lee shoots down the second Messerschmidt in Italy, you can see it is a twin engine plane.
Continuity mistake: When Po is killed by the NVA it is the middle of the night, Captains Cahill and Doyle are close enough to the village to hear the shots and rush back to the village but as they enter the village it is early dawn.
Other mistake: In the scene around the camp fire, Rob Roy can be clearly seen with with plasters on his hand.
Factual error: The cap badge worn by Captain Halliday of the RAMC is the Queen's crown version, which didn't come in to use until the 1950's. It is also made of brass, when it should be in a bronzed finish for officers.