Almost unmentioned by anybody, is that fact that the targeted destruction of assets indispensable to the survival of the civilian population (such as stored foods, cropland, livestock, wells and reservoirs, etc.) resulted in the South in the deaths of literally hundreds of thousands of black slaves. They were an entirely rural people, living always at a level close to subsistence, and strategies such as Sherman's "scorched earth" policy contributed to their massive die-off during and directly after the war.
There's a book called "Sick from Freedom" by Jim Downs (LINK) which attempts to accurately estimate the extent of the black die-off. The slaves were (like the urban and rural whites) denied food and even denied the ability produce crops (e.g. because of the slaughter of mules and other work animals), facing rampant disease, including horrific outbreaks of smallpox and cholera --- and many of them simply starved to death.
A shame. And one we have not yet faced.
In other words you are willing to continue to move the goalposts until you are satisfied that no condition can rehabilitate his reputation. That’s OK by me because it reflects upon you not me.
History does not consider Sherman a “war criminal” and those who shout it only look foolish to the rest of us.