What you pretend to be war crimes are largely lawful (under the laws of war) efforts to destroy the war-making capacity of the enemy.
This is not to say that isolated war crimes did not occur. On both sides. They did. But your wholesale accusation about widespread Union "war crimes" are unsupported by any evidence you have posted.
Wrote Major Henry Hitchcock, a native of Alabama on Sherman's staff, about the campaign through Georgia,
"[W]hile I deplore this necessity daily and cannot bear to see soldiers swarm as they do through fields and yards ... nothing can end this war but some demonstration of their helplessness.... This Union and its Government must be sustained, at any and every cost; to sustain it, we must war upon and destroy the organized rebel forces, must cut off their supplies, destroy their communications... [and] produce among the people of Georgia a thorough conviction of personal misery which attends war, and the utter helplessness and inability of the 'rulers,' State or Confederate, to protect them.... If that terror and grief and even want shall help to paralyze their husbands and fathers who are fighting us ... it is mercy in the end."
And what Major Hitchcock speculated would happen, did happen. By the end of the war, Lee's army was melting away with desertions. The poor foot soldiers felt the need to take care of family first, and leave Ol' Jeff and the Confederacy to fend for itself.
torture, mass rapes,arson of private residences,the intentional looting & destruction of places of worship,the taking of civilian hostages & MURDER of civilians is now & have always been WAR CRIMES, which are punishable by DEATH.
you're smarter than that!
free dixie,sw