Civil War is pretty messy and ugly . You might want to read up on what happened in our own. Thousands of innocent women and children burned out of their own homes by General Sherman. War crimes were committed by both sides. This is nothing new, and certainly nothing our own government hasn’t done. Wounded knee, trail of tears, etc.
http://listverse.com/2013/03/17/10-war-crimes-of-the-us-civil-war/
not included was the Great Hanging in Gainesville TX in 1862.