There was a simple remedy for that.
Lest you are making some simplistic “righteousness” argument about Sherman and the motivations of most Union commanders, you should know about a major example of not giving a damn about human slave victims of his campaign. See: Ebeneezer Creek. There was not a “simple” remedy to what he was doing.
Sherman sloughed off his senior responsibility onto his corps commander Jefferson C. Davis. There was starvation everywhere, caused by his scum thugs who later served under him in the Indian campaigns (where the worst of the Union army was sent, people like Sheridan, a real nasty piece of work with little self-restraint).
Sherman’s post war apologias, and his later cheered actions in the Indian wars, try as he might to make it sound good-— wasn’t. Take a look at a drunk schizoid in the photo of Sherman— war attracts all kinds, as do “revolutions” (Sherman’s eyes have every bit of the murderous look of the communist “saint” Che Guevara- a true psychopathic killer).