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Factual error: Sergeant Pierson has an M1928 Thompson with a 50 drum magazine throughout the game's campaign. By 1944, the M1/M1A1 Thompson would've been standardized for most soldiers and Marines. And even if he didn't get the M1 variants, he should be using 30 round box magazines instead of the drums. The box/stick magazines were more reliable and lighter than the drums, and would've completely replaced them by 1944.

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Revealing mistake: When we see the new recruits at boot camp, they are wearing M1 Helmets. But if you look closely, they have rivets through the sides of each helmet where the chinstrap bales would be. In reality, the M1 helmet chinstrap bales were and continued to be welded onto the shell of the helmet. This indicates the helmets in the film are probably plastic replicas with the bales being riveted in place.

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Factual error: Throughout the film, Joe Enders is wearing an M1 Helmet. But his helmet looks like a non-WW2 type and possibly Vietnam era. From the side of the helmet, it is a higher cut along the sides. This is a usual indicator to the era of the helmet, as WW2 M1 helmets are lower along the ears for better protection.

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Factual error: When U.S. troops arrive at the concentration camp, they are wearing M1941 Field Packs. These were developed by the United States Marine Corps and were only used by Marines, not the Army. The standard pack systems used by the Army would've been the M1928 Haversack or M1936 "Musette" Bag.

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Factual error: During the beach invasion cut scene, several soldiers have helmet bands with photos and cigarette packets secured to it. In reality, this was not done during World War II; would've been done extensively during the Vietnam War, but not in World War II.

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Factual error: During the jump, Boyce lands in a flooded field. In reality, he and his fellow Paratroopers should be wearing Life Preservers in the event of a water landing (called B5 "Mae Wests"). but none of them are.

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Factual error: When the saturation divers open the outer hatch on Kursk, they drop a glow stick. When they do, it falls to the floor on the submarine, indicating the inner hatch was open. The inner hatch of Kursk was closed, later opened by an ROV.

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Curtain Call - S4-E13

Revealing mistake: When Dandy shoots Penny through the sheet, the second sheet flies out as it's hit with blood. But the sheet he shot through has no hole in it.

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Factual error: When one of the Paratroopers gets hung up on a church roof, he reaches for what should be an M3 Trench Knife on his right boot. But if you look closely, it appears to be an M1 Carbine bayonet. This is not only the wrong knife, but M1 Carbines didn't have bayonet lugs until late 1945, if not until Korea.

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Factual error: Private Boyce fires 10 rounds from his M1 Garand at the German officer. The M1 Garand or M1 Rifle holds a maximum of 8 rounds.

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Factual error: During the plane ride into France, the Paratroopers are holding/carrying their weapons by their sides. In reality, their weapons (M1 Garands, B.A.R.s, etc.) would be carried in special "bags" strapped to their parachute harness. This not only protected their weapons, but also secured them to their person.

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Visible crew/equipment: During Marilyn Lovell's nightmare, the crew experiences cabin decompression. Right when the master alarm goes off, you see a piece of monofilament attached to Jim Lovell's suit hose, used to try and simulate zero G to make the hose appear to be floating. (00:13:20)

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Continuity mistake: When Lara Jean and Peter are creating the contract, the writing for the "Ski Trip" changes between when Peter writes it and when they sign the contract.

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Audio problem: When Ryan and Miller make their way to the bridge, they reload and fire their weapons behind sandbags. Miller begins to fire his Thompson but it jams and we see him try to rack the charging handle to fix it. He then tries to fire again but the gun fails to do so; all while we hear the sound of the Thompson firing. The editors added the sound of it firing despite the fact that it jams in the final cut.

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Character mistake: During the opening raid of the FSB safe house, an operator is seen taking hard drives out of a safe. As he does, he states over the radio that they are "SSDs" (Solid State Drives), when in reality they are normal HDDs (Hard Disk Drives), which are noticeably larger than SSDs. (00:07:25)

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Factual error: When Goodspeed fires the rocket at Captain Darrow, the rocket back blast would've killed Goodspeed. Despite the fact that he ducks to try and avoid it, the flames would've completely enveloped the room, killing if not serious injuring anything inside.

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Revealing mistake: When Elias goes out by himself, there's a closeup shot of him reloading his rifle. He pulls an empty magazine out and puts in a new one. If you look closely, the magazine he loads into his rifle is empty.

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Continuity mistake: When Felicia Williams goes to see Mike at the hotel after the accident, her nails change. During the accident, they are a pink color, but after and in the hotel, they are unpainted. It's unlikely she would have her nails done during and after the accident.

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Factual error: When Marty walks out of Lorraine's house, next to the front door is a light dimmer switch. Dimmer switches weren't invented until the late 1950s to early 1960s. (00:47:34)

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Factual error: When Nate dies by the alien moon rocks, his helmet visor "explodes." The visor in the film shatters like glass, but the real visors on actual spacesuits are made of polycarbonate, a plastic that does not shatter but deforms.

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