How about all those millions of civilians claimed to have died because they refused to answer the 1870 census, then mysteriously reappeared in 1880 counts.
I think we talked about that once or something, but I recall no mention of them showing up in a later census. Of course, if you wrote it, I probably missed it, because I skip your long messages.
We know 750,000 died as a direct result of the war. I've read that almost two million died as an after effect of the war.