To attack the civilian infrastructure that supported the Confederate armies in the field - that is, burn the crops, wreck the railroads.
To enable Sherman to live off the land and not worry about his highly vulnerable supply-line.
Sherman's March to the Sea
1864
savannah
That is called Sherman's march to the sea.
The March to the Sea
Sherman's March to the Sea
Savannah
1864
March to Sea
Savannah
savannah
Georgia
From Atlanta to Savannah
no one
1864
Georgia
November and December (1864)