While no actual Civil War battle took place here, all of the money made from the event is used for preservation. Also, the event is unique in that spectators do not pay admission.
Photos from this year:
This guy talked to the spectators about what was going on during the battle. He said he's been reenacting for 25 years but can't fight in the battles anymore due to illness. He said he really missed it.
Philadelphia in the distance.