Practically every year there is a theater release movie, OR a tv movie about the evil South, and the saintly North.
Truth is truth, and should be shared whenever it can be.
Your statement here is untrue, slanderous and evidence of profound misinformation about actual history.
Remember first, there was no Civil War in early 1861, until after secessionists provoked it, started it (at Fort Sumter) and formally declared war on the United States, May 6, 1861.
The Confederacy then sent its agents, military supplies and eventually armed forces into every Union state and territory it could reach.
And all that began before a single Confederate soldier had been killed in battle with any Union force.
Second, despite huge exaggerations perpetrated by pro-Confederates, the recorded truth is that very few atrocities were committed by either side against the other's civilians, but both sides did practice "living off the land" in the other's territories.
For a listing of the "top ten" Civil War atrocities, check out this link.
Of the ten worst atrocities listed, three by Union forces, seven by Confederates.
Bottom line: by comparison with other wars -- i.e., First or Second World Wars -- the US Civil War was a fight amongst gentlemen.