William Selby Harney (August 22, 1800 – May 9, 1889) was a Tennessee-born cavalry officer in the U.S.
Army, who became known (and controversial) during the Indian Wars and the Mexican–American War.
One of four general officers in the U.S.
Army at the beginning of the Civil War, he was removed from overseeing the Department of the West due to his Confederate sympathies early in the war (although he did keep Missouri from joining the Confederacy).
Under President Andrew Johnson, he served with on the Indian Peace Commission, negotiating several treaties, before spending his retirement partly in St.
Louis and partly trading reminiscences with Jefferson Davis in Mississippi.