(LtoR) Princess Catherine, Duchess of Cambridge, King Philippe of Belgium, Britain's Prince Charles, Queen Mathilde of Belgium, Britain's Prince William and British Prime Minister Theresa May stand at the Tyne Cot Commonwealth War Graves Cemetery in Zonnebeke on July 31, 2017, as part of a series of commemorations for the 100th anniversary of the Battle of Passchendaele.
The battle of Passchendaele, also called the third battle of Ypres, took place between July 31 and November 6, 1917 in Passendale, West Flanders. / AFP PHOTO / Belga / Benoit DOPPAGNE / Belgium OUT        (Photo credit should read BENOIT DOPPAGNE/AFP/Getty Images)