This is a great article examining the history of Emancipation, and how former slaves used photography to emphasise their freedom. Some examples can be seen by following the link:
Re-enactors demonstrated some of artillery gun fire last saturday. Rob Griesbach, a Confederate re-enactor, stated that "we try to show that the war is [about] more than just slavery. Each soldier had a totally different reason for enlisting. They fought for their kids. They didn't fight for themselves."