A West Point graduate, Maj. Gen. Alfred Pleasonton served most of the war in the eastern theater in the Army of the Potomac, as one point commanding that army’s Cavalry Corps. In March 1864, General in Chief, US Army, Lt. Gen. Ulysses S. Grant replaced Pleasonton with Maj. Gen. Philip Sheridan, shipping Pleasonton out to Missouri. Pleasonton was Rosecrans’ second in command during Price’s Missouri raid. After the war ended, Pleasonton stayed in the army as a major in cavalry. Pleasonton left the army in 1868 and received an appointment as commissioner of internal revenue in Grant’s administration, but had to resign amid controversy.