We did that one summer, hit as many of the revolutionary and civil war battlefields and areas as possible. It was moving. I kept thinking of my dad, who was a civil war enthusiast. Every year, he'd suggest visiting battlefields for vacation and every year he'd be voted down in favor of the beach. So, I'd be at some interesting spot and I'd mutter, "Are you looking at this, Pop?"
We visited the furthest west civil war battle site, the Battle of Pichacho Peak, near Tucson. We saw a site, even further west (can't remember for the life of me where) that (weakly) claims to be THE furthest west battle, but that was actually just some confederate troops riding into town recruiting, which some locals took offense to. Apparently there was some chest-bumpin' and possibly (but only possibly) a bullet or two involved, so it's hard to determine whether that can be considered a battle or even an "action". Probably wasn't more than some bitch-slapping and some hurt egos.