The Tomb of the American this, for a serviceman killed in WWI, was established in 1921
It is also known 
as the Tomb of the Unknown Soldier, but it has never been ... On November 11, 
1921, the unknown soldier brought back from France was interred below a three-
level... [DOC] [TLE] How a WWI soldier was chosen for the first official 'tomb of the ... - PBS [PAR] Nov 11, 2015 ...