Rear Admiral Frederick Lois Riefkohl (February 27, 1889 – September 1969), a native of Maunabo, Puerto Rico, was an officer in the United States Navy and the first Puerto Rican to graduate from the United States Naval Academy and to be awarded the Navy Cross. The Navy Cross is the second highest medal, after the Medal of Honor, that can be awarded by the U.S. Navy for heroism or distinguished service. He was a World War I Navy Cross recipient who served as Captain of the USS Vincennes during World War II.

Early years

Riefkohl (birth name: Luis Federico Riefkohl Jaimieson), was born and raised in Maunabo, Puerto Rico, his father was Luis A. Riefkohl y Sandoz, a Puerto Rican native and his mother and Julia Ana Jamieson (or Jamielson), a native of Saint Thomas, U.S. Virgin Islands. His paternal grandfather was Otto Riefkohl, a native of Germany and his paternal grandmother was Luisa Sandoz, a native of Switzerland who had immigrated to Puerto Rico in the mid-1800s. His older brother was Rudolph W. Riefkohl, who during World War I played an instrumental role in helping the people of Poland overcome the 1919 typhus epidemic. Rudolph eventually became a Colonel in the United States Army Corps of Engineers. His other siblings were his sisters, Helen, Emily and Louise Riefkohl.

Frederick Lois Riefkohl

During his formative years, Luis Federico Riefkohl received his primary and secondary education in various places. These included the towns of Arroyo, Puerto Rico; Christainsted, St. Croix, U.S. Virgin Islands and he spent three and a half years at Phillips Andover Academy in Boston, Massachusetts. Riefkohl received an appointment on July 5, 1907, from Beekman Winthrop, the U.S. appointed Governor of Puerto Rico from 1904 to 1907, to attend the United States Naval Academy in Annapolis, Maryland. In 1911, he became the first Puerto Rican to graduate from the Academy.

Frederick Lois Riefkohl

During World War I, Lieutenant Riefkohl served as Commander of the Armed Guard of the USS Philadelphia and on August 2, 1917, he was awarded the Navy Cross for engaging an enemy submarine. The Navy Cross is the second highest medal that can be awarded by the U.S. Navy and is awarded to members of the U.S. Navy or U.S. Marine Corps for heroism or distinguished service.

Frederick Lois Riefkohl

Navy Cross citation

Pre-World War II

Riefkohl was reassigned to the Fifteenth Naval District, Balboa, Canal Zone as District Communication Officer. From 1920 to 1923, he served in various ships and in different administrative positions, among which were Squadron Radio Officer for Destroyer Squadron 3, Atlantic Fleet; Aide and Force Radio Officer on the Staff of Commander Destroyer Force, Atlantic Fleet and Executive Officer of the USS Preble en route to the Asiatic Station. From August 1922 until October 1923, Riefkohl served as Aide and Flag Secretary and Fleet Radio and Communication Officer to the Commander in Chief of the Asiatic Fleet.

From July 1926 to August 1928, he assumed the command of the destroyer USS Corry. He returned to the Brooklyn Navy Yard in New York City, after a naval tour which included the ports of Port-au-Prince, Haiti; Guantanamo Bay, Cuba; San Juan, Puerto Rico; and St. Thomas, U.S. Virgin Islands. He served as Executive Officer of the USS Kittery until June 1929. Riefkohl served as Chief of Staff to the governor of the Virgin Islands until April 30, 1931, when he was named Commandant of the islands Naval Station. He continued to serve in various ships until he was placed in charge of the Navy Motion Picture Exchange, Brooklyn Navy Yard, New York, during his senior year at the Naval War College. From January 1935 to December 1936 he served as an adviser to the Argentine Navy Department at Buenos Aires, Argentina. From July 19, 1939 until April 4, 1941, Riefkohl served as War Plans Officer on the staff of the Commandant Fifteenth Naval District, Balboa, Canal Zone.

World War II

Riefkohl assumed command of the USS Vincennes on April 23, 1941. The USS Vincennes was in the Atlantic Ocean when the U.S. entered World War II and escorted the aircraft carrier USS Hornet to the Pacific. The Vincennes was among the cruiser escorts for Hornet and USS Enterprise which were involved with the Doolittle Raids on Tokyo and which later participated in the Battle of Midway.