The flag-placing tradition dates from 1948 . Every available soldier from the U.S. Army 's 3rd Infantry Regiment takes part . Flags were also placed at the Tomb of the Unknowns by the Tomb Sentinels , and at the cemetery 's Columbarium . Hide Caption
The flag-placing tradition dates from 1948 . Every available soldier from the U.S. Army 's 3rd Infantry Regiment takes part . Hide Caption