The Tomb of the Unknown Soldier () is a monument in Warsaw, Poland, dedicated to the unknown soldiers who have given their lives for Poland. It is one of many such national tombs of unknowns that were erected after World War I, and the most important such monument in Poland. The monument, located at Piłsudski Square, is the only surviving part of the Saxon Palace that occupied the spot until World War II. Since 2 November 1925 the tomb houses the unidentified body of a young soldier who fell during the Defence of Lwów. Since then, earth from numerous battlefields where Polish soldiers have fought has been added to the urns housed in the surviving pillars of the Saxon Palace. The Tomb is constantly lit by an eternal flame and assisted by a guard post provided by the three companies of the 1st Guards Battalion, Representative Honor Guard Regiment of the Polish Armed Forces. It is there that most official military commemorations take place in Poland and where foreign representatives lay wreaths when visiting Poland. The changing of the guard takes place every full hour, 365 days a year. History In 1923, a group of unknown Varsovians placed, before Warsaw's Saxon Palace and the adjacent Saxon Garden, a stone tablet commemorating all the unknown Polish soldiers who had fallen in World War I and the subsequent Polish-Soviet War. This initiative was taken up by several Warsaw newspapers and by General Władysław Sikorski. On April 4, 1925, the Polish Ministry of War selected a battlefield from which the ashes of an unknown soldier would be brought to Warsaw. Of some 40 battles, that for Lwów was chosen. In October 1925, at Lwów's Cemetery of the Defenders of Lwów, three coffins were exhumed: those of an unknown sergeant, corporal, and private. The coffin that was to be transported to Warsaw was chosen by Jadwiga Zarugiewiczowa, mother of a soldier who had fallen at Zadwórze and whose body had never been found. On November 2, 1925, the coffin was brought to Warsaw's St. John's Cathedral, where a Mass was held. Afterward eight recipients of the order of Virtuti Militari bore the coffin to its final resting place beneath the colonnade joining the two wings of the Saxon Palace. The coffin was buried along with 14 urns containing soil from as many battlegrounds, a Virtuti Militari medal, and a memorial tablet. Since then, except