About reenactments on NPS battlefields: "
NPS policy reflects sensitivity to the human suffering and sacrifice that took place on the battlefields and prohibits
battle reenactments, demonstrations of
battle tactics that involve exchanges of fire between opposing lines, taking casualties, hand-to-hand combat, or any other form of simulated warfare."
To my knowledge the only Civil War battle reenacted on an NPS site was at Manassas in 1961 during the centennial.
https://www.battlefields.org/learn/articles/centennial-reenactment-first-manassas My understanding is that the Park Service initially denied the request but the organizers brought it to the attention of President Kennedy, who replied "I like sham battles!" And so the battle was fought.