Revealing mistake: During the battle of the Chosin Reservoir, just before VF-32 comes in to provide air support, the Marines are firing their M1 Rifles. One of them mimics the recoil of it but we don't see the bolt move back when he fires his rifle. The M1 Rifle or Garand is semiautomatic, and the bolt moves back each time the shooter pulls the trigger.
Devotion (2022)
1 revealing mistake
Directed by: J.D. Dillard
Starring: Jonathan Majors, Glen Powell, Christina Jackson
Other mistake: During the brief for the Yalu River bridge attack the Corsair pilots are told to suppress antiaircraft so the "Panthers" can then safely go in to take out the bridge. But in the attack scene, the other aircraft are not Panthers but Douglas Skyraiders.