Lewis Wert (Wirth) served in the Civil War. He joined the Wisconsin Regiment of Volunteer Infantry as a private on January 4, 1862. On July 3, 1864 he was discharged at Redbone, Mississippi. On July 4, 1864 he reenlisted and served till July 12, 1865 where he was discharged from Louisville, Kentucky. He served in the 12th and 16th Regiments of Wisconsin.