November 11, 2023 marks the 102nd Anniversary of the Tomb of the Unknown Soldier at Arlington National Cemetery.
“The Tomb of the Unknown Soldier is Arlington National Cemetery’s most iconic memorial. The neoclassical, white marble sarcophagus stands atop a hill overlooking Washington, D.C. Since 1921, it has provided a final resting place for one of America’s unidentified World War I service members, and Unknowns from later wars were added in 1958 and 1984. The Tomb has also served as a place of mourning and a site for reflection on military service.”
https://www.arlingtoncemetery.mil/Explore/Tomb-of-the-Unknown-Soldier