David D. Porter Clipped Signature with Rank 4.75” X 1.5” "David D Porter Admiral” Porter was from one of the most distinguished families in the history of the U.S. Navy. Promoted as the second U.S. Navy officer ever to attain the rank of admiral, after his adoptive brother David G. Farragut, Porter helped improve the Navy as the Superintendent of the U.S. Naval Academy after significant service in the American Civil War.