Final answer:
General William Tecumseh Sherman led the 'March to the Sea' employing 'total war' as a tactic to break the will of the Confederate Army.
Step-by-step explanation:
The Union General who led the 'March to the Sea' and employed 'total war' as a tactic to break the will of the Confederate Army was General William Tecumseh Sherman.
During the Atlanta Campaign and later in the March to the Sea, Sherman led the Union forces in Georgia. He believed that to defeat the Confederacy quickly, it was necessary to demoralize the Confederates. His famous march was intended to do just that.
During the march, Sherman's forces destroyed everything in their path, committed to breaking the will of the Confederacy and forcing an end to the war. This included burning houses and barns, looting homes, stealing food, and destroying crops and livestock.