Go visit Antietam Battlefield Park and tell me there are not spirits running around that place in droves. We are talking industrial strength haunting. I think roaming around at night there would be really creepy.
I went to Bloody Angle in Spotsylvania Courthouse Battlefield Park on a cold, windy weekday in March, 1984. No one else was there. I could feel it.
I've camped out all around that area, and it does seem to be under some type of dark cloud. Antietam has been an evil place long before the Civil War. Even the Indians, avoided it or so I have read. Lots of canal workers are buried there from the 1830, some died from disease, and others from gang wars between the Irish and German laborers.