UHRL, George (Civil War) The Lutheran All Faiths Cemetery (Map 5, Section 15, Lot 6132), Middle Village, New York
Buried as George Uhrie

UNKNOWN (Belgium) (World War I), Colonne du Congres, Brussels, Belgium

UNKNOWN (France) (World War I) Arc de Triomphe, Paris, France, Paris, France

UNKNOWN (Great Britain) (World War I) Westminster Abey, London, England

UNKNOWN (Italy) (World War I) , National Monument to Victor Emanuel II, Rome, Italy

UNKNOWN (Rumania), Rumania
When the award was announced, there was not a specific city named. Several reports point to Bucharest

UNKNOWN (United States) (World War I) Arlington National Cemetery (Tomb of the Unknown Soldier), Arlington, VA

UNKNOWN (United States) (World War II) Arlington National Cemetery (Tomb of the Unknown Soldier), Arlington, VA

UNKNOWN (United States)(Korean War) Arlington National Cemetery (Tomb of the Unknown Soldier), Arlington, VA

UNKNOWN (United States) (Vietnam War) Arlington National Cemetery (Tomb of the Unknown Soldier-crypt vacant), Arlington, VA
The service member originally buried as Unknown was positively identified in June 1998 and returned to his family in St. Louis. There is not currently an Unknown Soldier from the Vietnam War.

UPHAM, Oscar Jefferson (China Relief) Summit View Cemetery (Section 1, Block 32, Lot 52), Guthrie, Oklahoma

UPSHUR, William Peterkin (Haitian Campaign 1915) US Naval Academy Cemetery (Lot 4, Section 0440 [formerly Lot 250, Lot A]), Annapolis, Maryland

UPTON, Frank Monroe (World War I) Arlington National Cemetery (Section 8, Grave 55-A), Arlington, VA

URBAN, Matt Louis (World War II) Arlington National Cemetery (Section 7A, Grave 40), Arlington, VA

Urell, Michael Emmet (Civil War) Arlington National Cemetery (Section 1, Grave 51-D), Arlington, VA