<P> A civilian guard was first posted at the Tomb on November 17 , 1925 , to prevent , among other things , families from picnicking on the flat marble slab with views of the city . A military guard was first posted on March 25 , 1926 . The first 24 - hour guard was posted on midnight , July 2 , 1937 . The Tomb of the Unknowns has been guarded continuously , 24 hours a day , 7 days a week , since that time . Inclement weather , terrorist attacks , et cetera , do not cause the watch to cease . </P>
<P> A civilian guard was first posted at the Tomb on November 17 , 1925 , to prevent , among other things , families from picnicking on the flat marble slab with views of the city . A military guard was first posted on March 25 , 1926 . The first 24 - hour guard was posted on midnight , July 2 , 1937 . The Tomb of the Unknowns has been guarded continuously , 24 hours a day , 7 days a week , since that time . Inclement weather , terrorist attacks , et cetera , do not cause the watch to cease . </P>
when is the tomb of the unknown soldier guarded
when is the tomb of the unknown soldier guarded
continuously
continuously