The 8th Missouri Volunteer Infantry (aka the "American Zouaves") was an infantry regiment in the Union army during the American Civil War. Among its early leaders were Morgan Lewis Smith and Giles Alexander Smith, both of whom later became generals. The 8th Missouri saw considerable service in the Battle of Vicksburg, where eleven men of the regiment won the Medal of Honor in one day during the May 22, 1863, assault on Stockade Redan. The regiment marched on to participate in the Battle of Jackson, the Battle of Chattanooga, and the opening phases of the Atlanta Campaign.