1st Regiment, US Reserve Corps, Missouri Infantry (Union)

Organized at St. Louis, Mo., September 3, 1861. Attached to the Division, Army of the West, to February, 1862. District of Rolla and District of St. Louis, Mo., Dept. of Missouri, to October, 1862. Campaign in Missouri September, 1861, to February, 1862. Duty guarding railroad beyond Rolla and in Southwest Missouri February to October, 1862. Mustered out October 6, 1862