 He was promoted to first lieutenant on April 25, 1862, and captain on April 4, 1863.After participating in 17 battles, he was wounded on April 1, 1863 at the Skirmish at Miskel Farm against the Confederate partisan John S. Mosby, near Broad Run, Virginia, and was discharged due to his wounds on October 1, 1863.After the St. Albans Raid, he was commissioned captain, Company M, Vermont Frontier Cavalry (26th New York Cavalry), on January 10, 1865, and promoted to major of the regiment on March 22, 1865.