"2. Yankee atrocities in all Confederate states."
Get the book With Blood and Fire by Michael R. Bradley.
This is the lowest price ($17.95) - otherwise you'll have to pay $30-40:
I'm sure you've heard the modern term "death squads." Yeah, that's what was going on.
"Ideological cleansing. Military and paramilitary units committing mass murder. Bodies left unburied. Ethnic and racial conflict. Prisoners executed without trial. Civilian dwellings destroyed for political purposes. Mass deportations. Civilian informers touching off military raids. Rape. Torture. Looting. These scenes were being enacted in all those parts of the South that were under Union military occupation during the years of the Civil War."