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WARSAW, POLAND - MARCH 22: Prince William, Prince of Wales at the Tomb of the Unknown Soldier, to lay a wreath at the monument dedicated to Polish soldiers who lost their lives in conflict, during day two of his visit on March 23, 2023 in Warsaw, Poland. (Photo by Chris Jackson/Getty Images)

WARSAW, POLAND - MARCH 22: Prince William, Prince of Wales at the Tomb of the Unknown Soldier, to lay a wreath at the monument dedicated to Polish soldiers who lost their lives in conflict, during day two of his visit on March 23, 2023 in Warsaw, Poland. (Photo by Chris Jackson/Getty Images)

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WARSAW, POLAND - MARCH 22: Military personnel stand guard at the Tomb of the Unknown Soldier, a monument dedicated to Polish soldiers who lost their lives in conflict, ahead of Prince William, Prince of Wales who will lay a wreath, during day two of his visit on March 23, 2023 in Warsaw, Poland. (Photo by Chris Jackson/Getty Images)

WARSAW, POLAND - MARCH 22: Military personnel stand guard at the Tomb of the Unknown Soldier, a monument dedicated to Polish soldiers who lost their lives in conflict, ahead of Prince William, Prince of Wales who will lay a wreath, during day two of his visit on March 23, 2023 in Warsaw, Poland. (Photo by Chris Jackson/Getty Images)

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WARSAW, POLAND - MARCH 22: A general view of the Tomb of the Unknown Soldier, a monument dedicated to Polish soldiers who lost their lives in conflict, ahead of Prince William, Prince of Wales, who will lay a wreath, during day two of his visit on March 23, 2023 in Warsaw, Poland. (Photo by Chris Jackson/Getty Images)

WARSAW, POLAND - MARCH 22: A general view of the Tomb of the Unknown Soldier, a monument dedicated to Polish soldiers who lost their lives in conflict, ahead of Prince William, Prince of Wales, who will lay a wreath, during day two of his visit on March 23, 2023 in Warsaw, Poland. (Photo by Chris Jackson/Getty Images)

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WARSAW, POLAND - MARCH 23: Prince William, Prince of Wales, lays a wreath at the Tomb of the Unknown Soldier, the monument dedicated to Polish soldiers who lost their lives in conflict, during day two of his visit on March 23, 2023 in Warsaw, Poland. (Photo by Yui Mok - Pool/Getty Images)

WARSAW, POLAND - MARCH 23: Prince William, Prince of Wales, lays a wreath at the Tomb of the Unknown Soldier, the monument dedicated to Polish soldiers who lost their lives in conflict, during day two of his visit on March 23, 2023 in Warsaw, Poland. (Photo by Yui Mok - Pool/Getty Images)