Tomb of the Unknown Soldier

Tomb of the Unknown Soldier, Italy, under the statue of goddess Roma, at Altare della Patria, Rome. Above it is equestrian statue of Victor Emmanuel II of Savoy, the first king of a unified Italy.
The Tomb of the Unknown Soldier, Moscow
The statue Landsoldaten, Fredericia, Denmark

A Tomb of the Unknown Soldier or Tomb of the Unknown Warrior is a monument dedicated to the services of an unknown soldier and to the common memories of all soldiers killed in war. Such tombs are located in many nations and are usually high-profile national monuments. Throughout history, many soldiers have died in war with their remains being unidentified. Following World War I, a movement arose to commemorate these soldiers with a single tomb, containing the body of one such unidentified soldier.