David Dixon Porter (1813–1891) was the second U.S. Navy officer to attain the rank of admiral. Porter joined the Navy at age ten under his father, David. During the American Civil War, Porter was involved in actions at Fort Pickens, New Orleans, Vicksburg, Red River, and Fort Fisher, rising to the rank of rear admiral. After the war, Porter became the Superintendent of the U.S. Naval Academy and initiated reforms in the curriculum. He was promoted to admiral after the death of David Farragut.Photograph: Mathew Brady; restoration: Adam Cuerden