Factual error: The scenes of the Battle of Yorktown are inaccurate. The view from the highest points of Yorktown is not of the ocean or even the Chesapeake Bay - it is of the York River. There would have been no way to see the French navy - they blockaded the entrance to the bay in early September (over 20 miles away), preventing resupply and reinforcement of the British forces. The French ships never fired on Yorktown. All of the artillery fired at Yorktown was land-based.
Revealing mistake: In the close-up on the three French officers directing the bombing of Yorktown, the one on the left is trying to hold a laugh. (02:33:47)
Answer: At the end of the film, it is implied that Charlotte and Benjamin Martin have married and had a child together. It wasn't alluded to earlier because it is meant to show that a person's life can start over, even after tragedy and loss.
raywest ★