William Kellogg mustered into the 10th Missouri Infantry on August 15, 1861, and was appointed regimental commissary sergeant on September 20, 1861. On January 27, 1863, he was promoted to first lieutenant and regimental quartermaster.

The 10th Missouri Infantry was organized in St. Louis, Missouri, in August 1861; the regiment fought in numerous actions, including the Iuka, Corinth, Port Gibson, Champion Hill, the siege of Vicksburg, and Chattanooga.

Kellogg was mustered out of service with the expiration of his enlistment on August 24, 1864; the 10th Missouri mustered out two months later.

Carte-de-Visite by Unknown Photographer.

Image Courtesy Wilson’s Creek National Battlefield; WICR 11588