Audio problem: At one point during Doug and Tony's hand to hand combat with the Union soldiers, the traditional Hollywood sound of a fist smack to the face is heard as Tony blocks a blow with his arm, instead of the sound of a thud.
Continuity mistake: When Tony begins fighting the Union soldier, Tony kicks the soldier's musket out of his hands and it lands to the right. The next overhead shot now shows the musket landed behind the soldier as Tony picks it up to fight another soldier.
Continuity mistake: While Doug is sword fighting with Michaels, Doug knocks off a three-candled candle holder off the table, but the next cut shows it back on the table.
Continuity mistake: When the major hands Doug the musket, Doug is holding it with his right hand, but the next shot shows Doug holding it in front of him with both hands.
Revealing mistake: A modern, mid-20th century concrete bridge/walkway is visible in the background of the Union soldier before he shoots Corporal Perkins.
Revealing mistake: When Doug stops to rest while being chased by the dog, he rests against a thick, heavy tree that wobbles when he leans against it.
Continuity mistake: After the gunpowder in the cave explodes, the same keg of gunpowder is blasted out of position and rolls down twice.
Continuity mistake: The boxes near the wounded sergeant switch positions after Macchiavelli shoots him.
Continuity mistake: Tony's position instantly changes as he tries to kick Doug off the bridge.