A good point I agree, but Sherman's definition of laying waste to the Confederate ability to wage War went way past that, don't you think? Rape, pillage, plunder on the citizenry oversteps the anbility to wage war unless you consider women little soldier factories and old men as the seed for those factories.
Sherman's idea of warfare was to punish the people. the only soldiers he had harassing him was men like Pam and mine's GG's Partsian Rangers under Joe Wheeler.