On July 16, 1861, days after the victory of the Missouri State Guard commanded by Governor Claiborne F. Jackson over federal forces at the Battle of Carthage, Peyton organized a cavalry troop that became known as the 3rd Missouri cavalry, with Peyton as its colonel, but would resign that commission on December 13, 1861.
On July 16, 1861, after the Missouri State Guard commanded by Governor Claiborne F. Jackson triumphed at the Battle of Carthage, Peyton organized a cavalry troop that was known as the 3rd Missouri cavalry with Peyton as its colonel; he would later resign this position on December 13, 1861.