Why is the Tomb of the Unknown Soldier guarded all the time?

I believe that this question actually relates to the American “Tomb of the Unknowns” Which is indeed a tomb contrary to other answers ,although the original Vietnam War Crypt is now empty and renamed. read more

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. read more

The Sentinels at the Tomb of the Unknown Soldier are completely dedicated to their duty of guarding the Tomb. In fact, line eight of our Sentinel's Creed refers to the"discomfort of the elements". Because of their dedication, the weather does not bother them. read more