Nothing to justify claims of "millions" or even "thousands" of civilian deaths.
Yes, there are plenty of graves of actual Confederate soldiers, but there is no noticeable increase in civilian graves or news reports of mass deaths from starvation & exposure.
Further, during the war is one thing, but after the war might be something else entirely.
After the war came certainly huge economic & social disruptions, but even then, no actual data supporting claims of "millions" or even "thousands" of unnatural deaths.
DiogenesLamp: "I'm not going to go to a lot of trouble looking for this information again"
Of course not, after all, why bother with mere facts when simple handwaving suffices?
More like I don’t consider the aftermath to be as significant of a topic of discussion as I do the beginning. It’s somewhat interesting, but not so much as how the war started and why.