Factual error: Alexander's copy of Homer is a codex, or bound book, not invented for another 400 years or much used for 600 years.
Continuity mistake: In the scene where Van Gogh cuts his ear off, he smothers his right ear with a towel to stop the bleeding. As the movie continues, we notice that throughout the whole movie his left ear was the one missing not the right ear as initially portrayed.
Continuity mistake: When the Tartar princess Bortai is first shown, and throughout the first part of the scene when John Wayne and Pedro Armendáriz ride to check her out, she lies in a litter shrouded in shadows or perfectly lit, depending on the shot. (00:03:40)
Continuity mistake: Just after Bader has been told he'll never fly again, he meets his girlfriend on a bridge. As they walk along the bridge, Bader is on the girl's left, but, in the long shot, Bader is now on the girl's right.