The greatest pyromaniac and war criminal, IMHO.
Sherman never murdered surrendered prisoners, ala N.B Forrest. He never robbed a bank, like Morgan. He never extorted money under threat of arson like Jubal Early and J.E.B Stuart. He punished troops who raped and murdered, unlike ANY Confederate commander who dealt with William C. Quantrill or "Bloody Bill" Anderson. So, I'll stick with Sherman. You can keep the "heroes" of the South.