Another avenue to pursue, depending on your interests, is the NSSA. A good friend of mine used to belong to a 79th Cameron Highlander's unit in the NSSA. The focus, as I understand it, is more competitive shooting with the Civil War era firearms (mostly replicas), rather than battle reenactments. Different military units of the Civil War are portrayed by their uniforms. I've never been involved directly with the North/South Skirmish Association myself, wrong time period for me. Plus, I'm not much of a shooter anymore (if it wasn't for gravity, I couldn't hit the ground).