Prime Minister Trudeau of Canada

Prime Minister Trudeau of Canada

Prime Minister of Canada lays a wreath at the Tomb of the Unknown Soldier in Arlington National Cemetery Prime Minister of Canada Justin Trudeau lays a wreath at the Tomb of the Unknown Soldier at Arlington National Cemetery, March 11, 2016, in Arlington, Va. Trudeau laid a wreath at the Tomb and the Canadian Cross of Sacrifice while at the cemetery.

(U.S. Army photo by Rachel Larue/Arlington National Cemetery/released).

South Korean Wreath Laying

South Korean Wreath Laying

South Korean Deputy Minister of Personnel and Welfare Hwang Woo Woong places his hand over his heart during the playing of Taps after laying a wreath at the Tomb of the Unknown Soldier at Arlington National Cemetery, Nov. 20, 2015, in Arlington, Va. Dignitaries from all over the world pay respects to those buried at Arlington National Cemetery in more than 3000 ceremonies each year.

(Photograph by Rachel Larue/Arlington National Cemetery/Released)

Commander of the Royal Canadian Navy lays a wreath at Tomb of the Unknown Soldier

Commander of the Royal Canadian Navy lays a wreath at Tomb of the Unknown Soldier

On April 20, 2015, Vice Adm. Mark Norman, commander of the Royal Canadian Navy, lays a wreath at the Tomb of the Unknown Soldier. Dignitaries from all over the world pay respects to those buried at Arlington National Cemetery in more than 3000 ceremonies each year.

Photographs by Rachel Larue