The Tullahoma campaign was a military operation conducted from June 24 to July 3, 1863, by the Union Army of the Cumberland under Maj. Gen. William Rosecrans, and is regarded as one of the most brilliant maneuvers of the American Civil War. Its effect was to drive the Confederates out of Middle Tennessee and to threaten the strategic city of Chattanooga.

Lieutenant-General Leonidas Polk was a bishop of the Episcopal Diocese of Louisiana and founder of the Protestant Episcopal Church in the Confederate States of America, which separated from the Episcopal Church of the United States of America. He was a planter in Maury County, Tennessee, and a second cousin of President James K. Polk. He resigned his ecclesiastical position to become a major-general in the Confederate States Army, when he was called "Sewanee's Fighting Bishop". His official portrait at the University of the South depicts him as a bishop with his army uniform hanging nearby. He is often erroneously referred to as "Leonidas K. Polk," but he had no middle name and never signed any documents as such.