John Hampden
After graduating from West Point in 1862, John Hampden Porter joined the United States Army as a volunteer appointed at Pennsylvania. He was promoted to Assistant surgeon November 25, 1864. On December 20, 1865 he received a promotion to Brevit Captain for "faithful service." On January 10, 1866 John Hampden Porter mustered out of the Army at Washington, D.C. with an honorable discharge.