Frederick L. Riefkohl

The Navy Cross is awarded to Lieutenant Frederick L. Riefkohl, U.S. Navy, for distinguished service in the line of his profession as Commander of the Armed Guard of the U.S.S. Philadelphia, and in an engagement with an enemy submarine. On August 2, 1917, a periscope was sighted, and then a torpedo passed under the stern of the ship. A shot was fired, which struck close to the submarine, which then disappeared.