Totally.
It shortened the war by months, at almost nil casualties.
What was sherman's goal in taking his army across Georgia?
He took his Army through Georgia to destroy and annihilate all Georgia's military and civilian infrastructures and conquest Savannah, taking from the rear the Confederate defensive system of the so called "Atlantic Fortress".
...punitive raid across Georgia, burning farms and wrecking railroads, to ruin the Southern economy and starve the enemy troops in the field.
Often times war can bring out the depravity of individuals. And, from individuals well educated and normally humane. This quote from General Sherman as he plans his campaign in Georgia pushes the envelope to the edge. He is quoted as saying this: " to leave a trail that would be recognized fifty years hence, "As an aside, he was also later successful in ensuring that out west, that Native Americans would not be a threat to white settlers.
He did just that by taking the surrender of Robert E. Lee, and allowing Sherman's march across Georgia and he Carolinas, which ended the war. During Reconstruction, he supported amnesty for former Confederates, civil rights for blacks, and troops to be sent South to control the KKK.
Georgia was seen as the "heart" or keystone of the Confederate States. The bustling new city of Atlanta was not yet Georgia's capital, but it was a busy railhead and an important supply depot and industrial center. Taking Georgia would sever the Atlantic portion of the Confederacy from the Gulf states, and make it virtually impossible to transport food and materiel between the two regions. Grant and Sherman had a careful strategy in going after Georgia. In March 1864 they planned that Sherman would first conquer the Confederate forces around Chattanooga and Atlanta (Army of the Tennessee), then swing north through the Carolinas and meet Grant and Meade's people in Virginia. This was approximately what happened over the next year, although Lee surrendered at Appomattox while Sherman was still a few hundred miles to the south.
On the Union side, it was Sherman, aided by the popular General McPherson who was killed in the battle for Atlanta. On the Confederate side, the shrewd and cautious General Joseph E. Johnston had been replaced by the heroic but foolhardy John Hood, who managed to get his army out of the city, but then led it to disaster. Meanwhile Sherman had decided to ignore him and attack the infrastucture that supported the Confederate armies in the field. Although this was the very opposite to what Grant had planned, it turned out highly successful - reducing the enemy to starvation, while costing almost nil battle casualties. The only sizable Confederate army in Georgia was the one occupying Savannah, commanded by General Hardee. He escaped across the river into South Carolina. It is worth noting that the supposedly ruthless Sherman did not feel it necessary to destroy that gracious city before he went in pursuit of Hardee.
After capturing Atlanta in September 1864, General William Tecumseh Sherman was compelled to split his forces to achieve his strategic objective of waging total war against the Confederacy. He aimed to disrupt Confederate supply lines and infrastructure by conducting a march to the sea, which required a diversion of troops. Splitting his forces allowed him to both secure his supply lines and create diversions, thereby confusing the enemy and reducing the risk of a concentrated counterattack. This strategy ultimately facilitated his successful campaign through Georgia and into the Carolinas.
Because, taking advantage from the weak resistance Sherman's army met, due to the impossibility for the Confederates to send reinforcements from Virginia's front, the Federals applied the tactic of "Total War", destroying farms, mills, railroads, bridges and other civilian and military infrastructures for a strip of 50 kilometres along the way they were advancing. Sherman's divisions were penetrating into the hearth of Georgia like an iron club through a cardboard wall.
33 miles taking I-20 WEST.
32 miles taking U.S. 78.
William Tecumseh Sherman.