One theory would be that CSA's draconian conscription operation (watch or read Cold Mountain, for example) emptied the countryside of its natural defenders. The conscription level may have been necessary given the idiotic location of the CSA capital, but quite a bit about CSA was idiotic.
In Missouri, which didn't secede but had a lot of Southern sympathizers, this conscription wasn't really a thing, and there was lots of asymmetric warfare. It actually started in the 1850s in what would become Kansas. (There are good movies about this too: The Outlaw Josey Wales and Ride with the Devil.)
In Missouri, which didn't secede but had a lot of Southern sympathizers, this conscription wasn't really a thing, and there was lots of asymmetric warfare. It actually started in the 1850s in what would become Kansas. (There are good movies about this too: The Outlaw Josey Wales and Ride with the Devil.)