It relieved Sherman of the endless worry over his lengthening supply-line - a single-track railroad all the way back to Nashville, with 24 viaducts that were always being blown up by Confederate cavalry.
After he took Atlanta, Sherman decided to reverse Grant's strategy of trying to pursue the Army of Tennessee into the mountains, and instead to attack the infrastructure that supported the Confederate armies - living off the land as he went.
This vandal-spree is now viewed with disfavour. But it shortened the war by months at a very low cost in casualties. And it did have the effect of starving the Confederate troops. The army under Lee that eventually surrendered to Grant was indeed close to starvation.
Sherman's March to the Sea
1864
savannah
That is called Sherman's march to the sea.
The March to the Sea
March to Sea
Sherman's March to the Sea
Savannah
1864
From Atlanta to Savannah
no one
Savannah
savannah
Georgia
yes
1864
Georgia