Corrected entry: When Tripp lies face-down in a medical tent after the lashing punishment, his shoe is removed to show Col. Shaw his wounded feet from not having decent shoes. But the shoe removed looks perfectly fine, no holes in the sole, etc. Yet Tripp's foot is raw and extremely bloodied! (I can see having some blisters from no socks, but straw or cloth bits prevent that.) Why not treat his foot wounds first rather than placing the shoes back on, then show to Col. Shaw.
Corrected entry: When the 54th Mass is shown marching into battle the Sergeant Major is wearing private's leathers (traps). Noncommissioned officers (sergeants and above) had traps with detailed, rectangluar belt buckles, not the oval "US" buckle. This is most obvious when they are marching towards Fort Wagner.
Corrected entry: In the scene where the 54th returns from the woods battle, they pass the white soldiers playing some music. The song they are playing is actually "Bonnie Blue Flag", a pro-South war song.
Corrected entry: In their first real battle in the woods, Thomas is shot in the upper left arm, yet three days later, after volunteering to carry the flag if the first bearer falls, he is marching forward to attack the fort. In reality, even if the 50+ caliber, 500 grain minie ball (patched balls weren't used in combat) hadn't shattered his humerus, necessitating amputation, it, having struck the medial portion of the arm, would have destroyed the brachial artery or basilic vein, causing tremendous shock, and speedy exanguination.
Corrected entry: During the assault on Ft. Wagner numerous soldiers are sent flying by explosives. There are several times when you can see a soldier throw himself back without being anywhere near a blast.
Corrected entry: The film's epilogue says that "the fort was never taken". While this is true, it is due largely to the fact that the Confederates simply abandoned the fort two months later.