I recommend you read The Politically Incorrect Guide to the Constitution buy Kevin Gutzman.
I'll read it...I do like reading.
P.S. there was no Civil war, so you are saying might equals right?
Might, equals Power to deem what is, and is not, Right.
Hitler was Morally Right, and Just in his quest to exterminate Jews, Gays, Blacks, etc; only because he had the Power to impose what was Morally Right, and Just. In the end, though, Hitler was WRONG, and not justified in his quest to exterminate Jews, Gays, Blacks, etc.; only because he ran head-on into a Power greater than his.
If the U.S. sanctions murder of Afghans, it is Morally Right, and Just; if some rogue military person puts a cape on, sneaks into a local village in Afghanistan, and slaughters 16 women, children, and men, and it was not sanctioned by the State, he is not Right, and not-Just.
One could argue that both examples, above, are morally wrong, but are they? There is only Subjective Morality, and at the height of Subjective Morality is Institution sanctioned Morality that has the Might, the substantive, coercive force to mandate it's Subjective Morality.