Nathan Kimball became the commander of Owen's brigade when under Brigadier General James T. Shields. While being removed from the Battle of Winchester after suffering an injury, Shields passed command of his division to Kimball. Kimball had served as a captain of volunteers during the Mexican War. With his commission as brigadier-general of volunteers during the Battle of Winchester, he led volunteers into the front lines of Antietam and Fredericksburg. After recovering from an injury during the assault on Marye's Heights during the Battle of Fredericksburg, he commanded a division at the siege of Vicksburg and at the Battle of Franklin. He was promoted to major-general, then mustered out of service on 24 Aug. 1965. After the war, he went into politics, serving in the Indiana House of Representatives. He later was appointed Surveyor-General for the territory of Utah, then as Postmaster General in Ogden Utah.