Factual error: In the scene at Lord Cornwallis' outdoor party celebration, right after Benjamin Martin and his Continental Army blows up a British Ship, one of Lord Cornwallis' Captains throws back a big gulp of his drink from his Martini glass in grief and disbelief - the problem is this movie takes place in the mid 1700s and the Martini Glass wasn't invented until the 1920s, during the Roaring Jazz days.
Continuity mistake: Charlotte is reading a letter from Benjamin at the end of the film. When the camera is pulled back far enough to show her surrounded by Benjamin's children as she reads, Charlotte's dress has a modest neckline and shows no cleavage. When the camera cuts to a closeup that shows just the letter and her chest, she suddenly has several inches of cleavage showing, obviously another dress.
Continuity mistake: When the Colonial militia leave after the parlay with Cornwallis, Benjamin Martin whistles for the two dogs. The dogs can be seen running through the gates at the heels of the militia but do not appear in any other of the scenes with the militia riding back to camp. (01:34:50)OneHappyHusky
Continuity mistake: In the scene when the Martins are in Charleston, Peter Howard is talking about his experience in the French and Indian War and how he lost his leg fighting in it. When the camera shows him standing there, he is holding a crutch under his right arm, seemingly supporting him, but it is his left leg that is missing. So he is actually giving support to his good leg while giving none to the missing one.
Continuity mistake: In the scene where Cornwallis is being shaved with a straight razor the amount of shaving cream on his face changes from almost none to nearly full in one shot.
Continuity mistake: During the battle of Cowpens, the French Major points out to Benjamin Martin that the line is beginning to falter. Benjamin runs to stop the retreat. As he runs towards the camera he is holding his pistol in his right hand but grips it by the barrel to swing it like a hammer or club. The camera then cuts to show Benjamin running away from the camera and the pistol is now gripped by the handgrip as it would be for firing.
Factual error: Although the historical advisor for the film is The Smithsonian Institute it does not seem to have noticed that the toy soldiers used in the film (some in superb close-up} are all dressed in uniforms of the mid to late 19th cent., i.e. approx. 100 years later than when the film is set.
Continuity mistake: In the part when Gabriel and Tavington are fighting right before Gabriel is killed, Tavington drops his sword before getting shot by Gabriel. When he is shot by Gabriel, he falls onto the ground which is clear of all debris. When Gabriel approches Tavington to stab him, Tavington flips over and stabs Gabriel with his sword, which he had dropped earlier.
Continuity mistake: In one battle scene, a soldier's head is knocked off by a cannonball but the same soldier appears in a later battle scene, complete with head.
Continuity mistake: When Thomas is shot, the entry and exit wounds are the same height. SInce the shooter was on horseback, the exit wound should be lower. (00:29:15)
Continuity mistake: After the Green Dragoons burn the people in the church, the Militia chases them to the riverbank. Col. Tavington shoots Rev. Oliver who falls to his knees holding his rifle with the barrel to the right. Rev. Oliver throws the rifle up for Gabriel to catch, but now the barrel is pointing to the left.