Because Grant carried high credibility with Lincoln. And Sherman carried high credibility with Grant.
It was Sherman who saw that punitive raids on Georgia would weaken the rebellion, help to starve the Southern armies, and show the outer world that the Confederacy was on its last legs.
He didn't. If you refer to Sherman he believed in total war and to burn his way to Atlanta to force Confederate forces to surrender.
A typhoon can destroy infrastructure and peoples because of high winds and rain. The rain leads to flooding and the high winds can sometimes lead to high ocean waves that destroy fishing vessels.
The Germans failed to destroy the RAF or civilian morale.
To destroy the civilian infrastructure that supported the armies in the field. Sherman's March to the Sea wrecked farms and railroads, helping to starve the enemy troops. It shortened the war by months at almost nil casualties.
Total War.
Abraham Lincoln.
Total war is a conflict of unlimited scope in which a belligerent engages in a mobilization of all available resources at their disposal, whether human, industrial, agricultural, military, natural, technological, or otherwise, in order to entirely destroy or render beyond use their rival's capacity to continue resistance.
General Sherman and his superior General Grant believed it was necessary to destroy civilian property that may have been used to supply Confederate troops. In this way, it would weaken the Southern armies.
Well.... We had distoryed a lot of things, but if you do it without permission. Then yes, it is.
First it is called the Emancipation Proclamation. He made it to keep the South from continuing to use slave labor. It was basically to help the Union to win the Civil War because they could not do it through brute military strength, they needed to destroy the Confederacy from the civilian level.
To attack the civilian infrastructure behind the Confederate war-effort - burning farms, wrecking railroads, helping to starve the troops in the field and destroying civilian morale. It shortened the war by at least six months, at almost nil casualties,.
Because he had failed to destroy the Army Of Tennessee, as ordered. But he had managed to destroy civilian morale when he occupied Atlanta, and decided to continue with this policy.