The Tomb of the Unknown Soldier contain the remains of a dead soldier who is unidentified or “known but to God” as the stone is inscribed. These remains are considered impossible to identify, and so serve as a symbol for all of a country’s unknown dead wherever they fell in the war being remembered. The anonymity of the entombed soldier is the key symbolism of the monument; it could be the tomb of anyone who fell in service of the nation, and therefore serves as a monument symbolizing all of the sacrifices. rochestermilitary.com