There is a book that I read a few years about called The South Was Right by the Kennedy brothers that really made me think that the South Was Right.
Fully 98% of both countries did not care one bit about slavery.
After enough Yankee soldiers were killed the survivors, their comrades, just wanted revenge and they didn't care for what cause—they wanted blood and the bodies of their hated enemies women...
The Red Army in East Germany during WWII is the best comparison.
I read it too. Interesting arguments but wrong conclusions. The southron slavers were wrong (thank God).