William H. Knickerbocker was mustered in as assistant surgeon of the 2nd Missouri Cavalry on September 1, 1861.

The 2nd Missouri Cavalry was organized in the fall of 1861 at Benton Barracks (St. Louis) and placed in immediate service pursuing guerillas in North Missouri; in 1864 they were engaged in battles with General Sterling Price during his Missouri raid. They fought at Boonville, Little Blue River, Big Blue River, Westport, Marais des Cygnes, and Mine Creek.

Knickerbocker resigned his commission on April 19, 1863.

Carte-de-Visite by H. A. Balch’s Star Photograph Gallery, Memphis, Tenn.

Image Courtesy Wilson’s Creek National Battlefield; WICR 11616