a couple of interesting looking sites I came across last night as I was looking for rules of war. They are mostly related to Sherman's March. Now a serious question -- If there are (were) no rules of war in the WBTS, how could Wirtz be charged with a war crime?
http://www.scv674.org/SH-13.htm
http://www.southernmessenger.org/csa_page.htm
GP