Revealing mistake: The road leading out of the samurai village has distinct tire tracks from vehicles.
Revealing mistake: Near the end of the movie, after Jude Law has been shot, he is lying on his back with Nicole Kidman leaning over his face. In the shot looking up at Kidman past Law's left ear, you can see the webbing for Law's wig on his left temple.
Revealing mistake: After a close-up of the drawing of one-armed Lord Nelson, Killick opens the lid of the steaming food for Jack in a close-up, just before Killick says, "Oh, here we go again. Scrape, scrape, screech, screech." Later, after Pullings takes command of Acheron, Jack tunes up his violin and Killick says, "Here we go again," in another close-up of the steaming food for Jack. Every detail of the food shown in both close-ups is exactly the same - obviously shot at the same time. (00:26:25 - 02:05:20)
Revealing mistake: In the Fredericksburg battle scene, just after the Union officer orders the men to fall back, there is a 1 or 2 second close-up shot of a Confederate soldier taking a hit and falling back. As he does, a modern wristwatch is visible on his left wrist under the sleeve of his coat. (01:49:49)
Revealing mistake: Sarah is reading her daughter a story about Snow White and the Seven Dwarves, but the cover of the book is Little Red Riding Hood.