Continuity mistake: In the scene before Patton hears the news of getting relieved of command, he is walking with his NCO aide George, who is wearing E6 rank on his shirt. In the following scene while getting ready for bed, the same sergeant is now wearing E5 rank.
Continuity mistake: About 3/4 through the film, which is supposedly set in the 1900s, there's an exterior shot of Jenny Agutter (as Roberta) talking to William Mervyn (as "the old gentleman"). Over Mervyn's shoulder can be seen a white delivery van driving rather fast along a road on the other side of the valley from where the filming took place (this is very obvious in the wide-screen version but less noticeable in the pan-and-scan TV version).
Continuity mistake: When Erica eats the cat the telephone is on its side, then the right way up.
Continuity mistake: Burt Lancaster is sitting in his car at the end, and he asks the tower if he can listen to the radio traffic for the incoming plane that's landing. The tower replies "Sure, it's on frequency 117.1". Burt then tunes the dial on his receiver to 171, not 117. 170 is blatantly written under the dial in bold type.
Continuity mistake: Near the end of the movie, James Caan is jogging west across the Penn St. bridge in Reading, PA. He is then immediately seen jogging north on 11th St., several miles and in the opposite direction of where he was just running.
Continuity mistake: In one scene when Hudson and Andrews enter the vestibule of her house, Rock can clearly be seen to have "mutton chop" sideburns. However, once inside the house, they're gone. When he goes back outside, they're back.
Continuity mistake: At the battle of Edgehill when Crowell's cavalry and Prince Rupert's cavalry are in the middle of a melee and you can see a wound on Crowell's left arm, the same wound he receives at Naseby. It is clear that the scene was meant to be used for the battle of Naseby but was cut and used at Edgehill.
Continuity mistake: During the attack a parked US plane is blown up and the prop goes cartwheeling off along the runway. Not wishing to waste a perfectly good explosion the director filmed this from several different angles and used the same explosion several times. You can easily see the prop each time.
Continuity mistake: When Jack and Mrs. Pendrake meet in the whorehouse and talk through a screen of glass beads, Jack is standing very close to the screen, that's why it's out of focus when the camera is on her "looking through his eyes". However, in one shot it's not, and that looks quite strange because Jack hasn't moved away from the screen. (01:46:35)
Continuity mistake: In one of the early surgery scenes you see Trapper operating, although he arrives only later as the new chest cutter. (00:13:20)
Continuity mistake: During the entire battle the ground is sticky mud. When the French cavalry charge however the ground is dry, so dry there is dust coming from the horses' hooves as they gallop.
Continuity mistake: When Tawes goes upstairs into the room where Alma is sitting on the bed, they hug then sit on the bed, and kiss. As they kiss, Tawes places his hand on her left shoulder. Then when it cuts to a closeup, his hand is missing.
Continuity mistake: When one of the apes shoots the horse, Brent and Nova fall off the horse and land about six feet away from it. Shot cuts and they are suddenly only about two or three feet away from it. (00:31:00)
Continuity mistake: When Cratchett gets the bird from the shop, it's clear that the bird is a duck. But throughout the entire film he's referred to as a goose.
Continuity mistake: In the scene where Jack Nicholson finds the piano on the back of the moving truck, he uncovers it and tosses the tarp on the side of the truck. Over the next few shots, the tarp disappears and then reappears draped over the side of the truck. As well, the shots of Billy Green Bush taken from outside the vehicle show his hands gesticulating wildly, while the shots from inside the vehicle, from over his right shoulder, show his right hand calmly positioned on the upper right part of the wheel. This scene also contains a magically appearing chair. When Jack first finds the piano, he has to lean over to play, but a few shots later, he is seated comfortably on a straight-backed kitchen chair. (00:19:10)
Continuity mistake: In the scene at the hockey game where Oliver talks to Jenny while he's in the penalty box, he wears number 7. When the shot cuts to the action on the ice during this conversation, number 7 is in the game sliding on his stomach, and then back in the penalty box talking to Jenny. (00:04:10)
Continuity mistake: The wooden box (holding the "silver bullets" that the sheriff is handing out) has no markings on the side from a distance, but when the camera zooms in to see the ammo, you can see heavy black marks like someone crossed out a name and address, and you can also see a paper label partially torn off the box with writing blacked out. Then when the camera zooms back again, and the deputy picks up the box, the side of the wooden box is blank again. (01:21:20)
Continuity mistake: Henry Miller at the beginning of the movie is mooching a few Francs to go out with his wife who just arrived in town. As he is trying to get a few from Boris, Mona's hair keeps changing position in front or behind her shoulders.
Continuity mistake: When the police investigator is speaking with the reporter after leaving the victim's apartment before getting in his car, just as he says "No undergarments were found in the apartment", the reporter is shown lowering the notepad in his left hand and has his right hand with a pen in it, placed on top of the car. In the next shot, the reporter's left hand and his notepad are suddenly placed on top of the car, writing in the notepad with his pen. The shot after that, only the right hand is placed on top of the car and the left hand is at his side. (00:25:48)