Unknown Soldier, Tomb of the

Unknown Soldier, Tomb of the,

form of memorial to a nation's war dead, adopted by many countries after World War I. The Tomb of the Unknowns, a memorial to the American dead of World Wars I and II, the Korean War, and the Vietnam War, is in Arlington National CemeteryArlington National Cemetery,
420 acres (170 hectares), N Va., across the Potomac River from Washington, D.C.; est. 1864. More than 60,000 American war dead, as well as notables including Presidents William Howard Taft and John F. Kennedy, Gen. John J.
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, just outside Washington, D.C. On Nov. 11, 1921, an unidentified soldier who had been killed in France was buried there in a temporary crypt over which a marble slab was placed; the completed tomb, a sarcophagus of Colorado marble placed on the original base, was dedicated as the Tomb of the Unknown Soldier on Nov. 11, 1932. On Memorial Day, 1958, the bodies of two other unknown soldiers—one of whom had died in World War II, the other during the Korean War—were buried in the tomb, which was renamed the Tomb of the Unknowns. Remains of an unknown soldier from the Vietnam War were interred here in 1984, but later investigations revealed the soldier's identity, and they were removed. Deciding that scientific advances, including DNA tests (see DNA fingerprintingDNA fingerprinting
or DNA profiling,
any of several similar techniques for analyzing and comparing DNA from separate sources, used especially in law enforcement to identify suspects from hair, blood, semen, or other biological materials found at the scene of a violent
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), had made Vietnam War or future unknowns unlikely, the Pentagon announced (1999) that no new remains would be placed in the memorial.

The best known of other such memorials are those in Westminster Abbey in London and under the Arc de Triomphe in Paris. Similar tombs are in Baghdad, Russia, and elsewhere.

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