Elliott took command of a new division that joined III Corps, Army of the Potomac, as its third division shortly after the Battle of Gettysburg. Elliott went west again and led the first division of the cavalry corps of the Army of the Cumberland during the relief of the Siege of Knoxville. He served as commander of that army's cavalry corps in the Atlanta Campaign. He was transferred to the infantry in late 1864, leading a division of IV Corps at the Battle of Nashville. Elliott then commanded the District of Kansas in the Department of the Missouri before being mustered out of the volunteer service on March 1, 1866. On June 17, 1866, President Andrew Johnson nominated Elliott for the award of the honorary grade of brevet major general, U.S.A., to rank from March 13, 1865, and the U. S. Senate confirmed the award on July 23, 1866. Postbellum After the war, Washington Elliott remained in the Regular Army (United States) as a major in the 1st Cavalry. He was promoted to the rank of lieutenant colonel, and in 1878, became colonel of the 3rd Cavalry. Elliott retired in 1879 and became a banker in San Francisco, California. He died in that city in 1888, and was buried at the San Francisco Presidio. See also List of American Civil War generals (Union) References Further reading Eicher, John H., and David J. Eicher. Civil War High Commands. Stanford, CA: Stanford University Press, 2001. . Warner, Ezra J., Generals in Blue: Lives of the Union Commanders, Baton Rouge: Louisiana State University Press, 2006. . 1825 births 1888 deaths People from Carlisle, Pennsylvania People of Pennsylvania in the American Civil War Union Army generals American military personnel of the Mexican–American War