Corrected entry: When the Mohicans chase after Magua to save Alice, just after Magua kills Uncas, Alice walks onto the outcropping with Magua. As she stands there you can see rain beginning to fall. A peal of thunder echoes along with the scene. As she turns and leaps off the outcropping we see a shot of her from below showing a nice blue sky and the sun shining.
Corrected entry: During the withdrawal from Fort Henry, virtually the entire column of Redcoats and civilians, including Colonel Munro, are wiped out by the Indians. In reality, the Indians only attacked the rear of the column, which was mainly comprised of civilians, killing between 70 to 180 people. The majority of the British force was not even attacked and the real Colonel Munro survived.
Corrected entry: When the group is travelling to the fort and come upon the burned out house, the body of the boy is next to the home and under some charred wood, but the body still has skin and the clothes are not burnt. (00:24:40)
Corrected entry: In the scene where Daniel Day-Lewis picks off the French/Indians attacking the runner from the top of the fort, the muskets of the time were no way accurate enough for him to pick off 2-3 guys in a row, using various muskets. British soldiers used smooth bore muskets with a range of 100-150 yards until the 1840's. Rifled barrels (and hence, accuracy) didn't come into use until about the 1850's.
Corrected entry: Near the very end of the movie, when Magua has taken Uncas' love interest (Madeleine Stowe's character's sister) and he is taking a path through the mountain, Daniel Day-Lewis runs up a path and brushes against what seems to be a rock. But, the grey coloured "rock" seems to be a prop and moves like a piece of cloth.