2nd Regiment, Missouri Cavalry (Merrill's Horse) (Union)
Organized at Benton Barracks, Mo., by Captain Lewis Merrill, U. S. A., under authority of General Fremont, September 3 to December 11, 1861. (Co. "L" organized at St. Louis, Mo., January 1, 1863, and Co. "M" at Warrenton June 30, 1863.)