 Smith's Brigade was sent to the Western Theater in the autumn of 1863 along with the rest of the XI Corps.During the Chattanooga Campaign, Smith led his brigade in the Army of the Cumberland in a successful bayonet assault up a steep hill that now bears his name (Smith's Hill) during the Battle of Wauhatchie.In the army reorganization later that year, his brigade was disbanded and Smith returned on January 3, 1864 to the command of the 73rd OVI.