Queen Elizabeth II on Sunday honored the soldiers killed in World War I during the annual Armistice Day ceremony in London.

The British monarch was accompanied by her husband, the Duke of Edinburgh, and other members of the Royal Family as she placed a wreath at the monument to soldiers killed in different wars.

Veterans of several wars attended the ceremony on Whitehall Avenue along with Prime Minister David Cameron, the deputy prime minister, Nick Clegg, and the leader of the opposition Labor Party, Ed Miliband.

Prince William, the son of Prince Charles, also placed a wreath of poppies at the monument.

Those present at the ceremony observed two minutes of silence at 1100 GMT to mark the World War I Armistice, which took effect at 11:00 a.m. on Nov. 11, 1918.

Poppies are a symbol of the fallen and many citizens have been wearing the flowers on their lapels the past few days.

President Francois Hollande, meanwhile, honored France's dead from World War I, still called "The Great War" by the French, in a ceremony at the Arc de Triomphe in Paris.

U.S. President Barack Obama plans to mark Veterans Day by delivering an address Sunday at Arlington National Cemetery to honor those who fought in America's wars, the White House said. EFE