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.
Factual error: In the scene where Vince returns to his dorm room and finds Dennis Franks has moved in, Franks informs him that Coach Vermil is mixing the veterans with the rookies. In 1976, Dennis Franks and Vince Papale were both rookies.
Revealing mistake: When the 54th Mass. marches past a liberated plantation some black children wave them on. One of them is wearing a digital wristwatch.
Continuity mistake: While Katie Couric is interviewing Sully, the first shot shows her with a portfolio in her hand and she is not wearing a ring on her left hand. The camera goes to Sully, then back to Katie and suddenly there is a ring on her left hand.
Factual error: When Suzanna and Lisa are at Daisy's house, Daisy lays out money for Lisa so that she can get pancakes, and the bill she laid down is one of the new bills. This movie is set in the 60s so of course they wouldn't have the new bills, considering they didn't start making them until 1998.
Revealing mistake: When the kids step out of the water and walk towards the house, the floor is already soaking wet from previous takes.
Character mistake: While in the sewing workshop, the teacher approaches and asks, 'What's the matter, Charlie?' but at this point he is still known as Peterson. It's not until later on in the film that he decides upon the name of Charles Bronson. (00:11:35)
Visible crew/equipment: In the last scene where the main character escapes, he jumps into the bay and is supported by a sack which he is carrying. Actually you can clearly see that he is supported from underneath by a diver.
Continuity mistake: When Mommie is cutting Christina's hair it keeps on changing from long to short several times.
Deliberate mistake: To make Jim Braddock look more heroic, Max Baer is portrayed as being very mean and hateful. In fact, the real Max Baer was an extremely pleasant man who was devastated when Frankie Campbell died after fighting him. Many boxing historians and sportswriters have complained about this inaccurate depiction of Baer.
Other mistake: In Wilson's Congressional office, the Texas flag on his left is mounted upside down. The white panel belongs on the top of the flag, not the bottom.
Continuity mistake: Near the beginning of the film where Howard Hughes flight tests the silver monoplane (the H-1), the close up shots show an open cockpit while the longer shots show a closed cockpit.
Continuity mistake: When Elton and John Reid are kissing in the cupboard John's hand keeps changing between shots. John's hand rolls down Elton's chest, then the next shot it's on Elton's cheek, the next shot he takes his hand away, then the next shot his hand is by Elton's mouth and Elton pretends to bite John's thumb.
Factual error: The Map of Europe used for plotting their route displays the Netherlands incorrectly, showing its two major central polders (low-lying reclaimed landmasses surrounded by dikes) which weren't drained and finally completed until 1968.
Visible crew/equipment: While Barnum and Phillip sing "The Other Side" Phillip uses two stools to get up and down from the bar top. When he steps down from the bar top, in this wideshot (also the first shot of them in the pub and other shots) the two upright stools Phillip used are secured with additional support, note the floor area underneath the stools' legs have the same pattern as the rest of the floor, though we can see the outline where the pattern's lines don't match up. Additionally, we also see three actors' marks (in the shape of an "L") on the floor in front of the bar, which will be where Barnum and Phillip will stand when they agree on the ten percent. (00:36:05)
Factual error: Chris Kyle did not make Chief after his first deployment. He made Chief during his fourth deployment.
Continuity mistake: When Teresa is yelling and hitting Jordan because he cheated on her with the blonde girl in the limo, the car disappears and reappears between shots. (01:00:35)
Other mistake: When in the tub in Arkansas, Wyatt is bare chested. In bed with Josie he's suddenly sprouted a lush garden of chest hair.
Continuity mistake: At the end of Margot Robbie's scene she picks up the champagne flute from her bathtub. The camera angle changes and she is no longer holding it, then picks it up again.
Audio problem: When Chris drives up in the truck while Selena is mowing the lawn, Selena asks what he got. While you hear "junk food" his mouth says something else.