3rd United States Reserve Corps Infantry.— (3 Months.)

Organized at Turner Hall, St. Louis, Mo., May 8, 1861. Attached to Lyons' Army of the West. Capture o£ Camp Jackson May 10. Provost duty at St. Louis till July 1. Three Companies sent to Southwest Missouri July 1. Expedition to Northern Missouri against Harris July 16 (7 Cos.). Action at Fulton July 17. Duty at Fulton and St. Louis till August 18. Mustered out August 18, 1861.

Regiment lost during service 1 Enlisted man killed and 8 Enlisted men by disease.

SOURCE: Frederick H. Dyer, A Compendium of the War of the Rebellion, Part 3, p. 1323

3rd United States Reserve Corps Infantry.—(3 Years.)

Organized at St. Louis, Mo., August and September, 1861. Attached to 2nd Brigade, Sigel's Division, Fremont's Army of the West. Fremont's Campaign in Missouri September to November. At Rolla, Mo., till January, 1862. Consolidated with Gasconade Battalion to form 4th Missouri Infantry January 18, 1862.

SOURCE: Frederick H. Dyer, A Compendium of the War of the Rebellion, Part 3, p. 1323