No, they'd just use computer graphics to generate the aircraft at Shiloh.
Actually, for a movie set in the War of Northern Aggression, the Battle of the Crater might make better film.
The movie would actually pass politically correct muster because of the treatment of the "Colored Troops" by the racist Union officers. (The Blacks were specially trained to spearhead the attack, but were replaced in that role by white troops that hadn't been properly trained for the job. The Blacks were then used as cannon fodder).
How much is any war film about the human condition in such a time of conflict versus the actual historical significance of the battle?
Is there a higher significance placed upon a movie about a battle in America in the late 18th century, or in the mid-19th century, or in the time just preceding the mid-20th century?
Or can a good film also be made about a battle 1500 years ago or 2500 years ago or 800 years ago in Eastern Europe or a thousand years ago in Asia?
People looking for history lessons will get more out of a book (fact or fiction).