Why not?
Sherman was a mass murderer of innocents, his own fellow Americans, a mass murderer of innocent women and children..when there was no need- except to sate the blood thirstiness of a psychopathic killer.
Mouth-foaming hyperbole aside, so were Hap Arnold, Arthur Harris, and Curtis Lemay. They deliberately targeted civilians of the countries that were engaged in war against the United States. They bombed cities to the ground, fire-bombed them in some cases. Their acts were just as deliberate as the actions you attribute to Sherman were and were responsible for hundreds of thousands of innocent civilian dead. They had no remorse for their actions; it was war and in war you win in part by destroying your enemies capacity to wage war and the willingness of their people to wage it. So by your own definition the commanders of the allied air forces were filled with blood thirsty psychopathic killers.
Sherman himself admitted after the war that he was taught at West Point that he could be hanged for the things he did.
I would be very interested in seeing that quote.
Let me ask you again; if the commander of US forces in Iraq ordered his unit to march across the nation and burn every building they come across, strip the land clean of any source of food or supplies, destroy any and all livestock they come across and loot and rape, what would you think of him?
Now who's resorting to unfair comparisons?
“Hap Arnold, Arthur Harris, and Curtis LeMay”
To be fair, those attacks were done in retaliation, and “Bomber Harris” was vilified in the UK after the war for his bombing campaigns. It wasn’t until relatively recent he was accepted (sort of) and a Bomber Command” memorial was finally constructed.