From my experience in the USMC, the south enlisted the most people but the north and Midwest produced more quality than quantity. I really don't know about the CW, except that maybe at the beginning the south might had the better quality soldier, but during the middle and end of the war it was the north. In all fairness to the south, a lot were conscripted and we all know a lot of times conscription constituted dissent. Subsequently, desertion was prevalent and it started to fall apart. It seemed like morale picked up momentum for the Union rank & file as the war progressed. Nevertheless, at the start of the war who had the better trained soldiers?