Really? Have any such general orders been found?
http://www.pelicanpub.com/proddetail.php?prod=9781589804661#.UXdC58qfOMc
“Women and children, black and white, were robbed, brutalized, and left homeless in Shermans infamous raid through Georgia. Torture and rape were not uncommon. In South Carolina, homes, farms, churches, and whole towns disappeared in flames. Civilians received no mercy at the hands of the Union invaders. Earrings were ripped from bleeding ears, graves were robbed, and towns were pillaged. Wherever Federal troops encountered Southern Blacks, whether free or slave, they were robbed, brutalized, belittled, kidnapped, threatened, tortured, and sometimes raped or killed by their blue-clad liberators.