The XV Corps was a military formation of the United States Army that played a significant role during the American Civil War. Established in 1862, it participated in several key battles, including the Battle of Gettysburg and the Siege of Petersburg. The corps was known for its effective leadership and strategic maneuvers. During its service, the XV Corps was part of the Army of the Tennessee and was involved in the Atlanta Campaign. It was commanded by notable leaders such as Major General William T. Sherman. The corps contributed to the Union's efforts to secure victory and ultimately helped shape the outcome of the war.