Source: United States Department of Defense (video statements)
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Located in @ArlingtonNatl, the Tomb of the Unknown Soldier has served as a symbolic grave for all military warriors whose remains have not been found or identified since 1921. The tomb is guarded around-the-clock regardless of inclement weather by sentinels from the @OldGuardVideo.
#DYK The Tomb of the Unknown Soldier currently holds three unidentified service members, representing soldiers from #WWI, #WWII and the Korean War. A fourth soldier previously buried in the tomb, representing the Vietnam War, was identified in 1998 and returned to his family.
History on the Tomb of the Unknown Soldier
https://www.defense.gov/multimedia/experience/tomb-of-the-unknown-soldier/
For more on the Department of Defense, visit: http://www.defense.gov
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