In what direction did the Union advance between Shiloh and Savannah?

Between the Battle of Shiloh and the capture of Savannah, the Union forces advanced primarily southward through Tennessee and into Georgia. Following Shiloh, Union General Ulysses S. Grant continued his campaign in the West, leading to the capture of key locations such as Vicksburg. The Union's advance culminated in General William Tecumseh Sherman's famous "March to the Sea," which involved a strategic march from Atlanta to Savannah, further solidifying their control over the region.