YPRES, BELGIUM - JULY 30: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Last Post ceremony, which has taken place every night since 1928, at the Commonwealth War Graves Commission Ypres (Menin Gate) Memorial on July 30, 2017 in Ypres, Belgium. The Duke and Duchess of Cambridge are joined by two hundred descendants whose ancestors are named on the Gate, alongside representatives from nations who fought on the Salient. The commemorations mark the centenary of Passchendaele - The Third Battle of Ypres. (Photo by Chris Jackson - Pool/Getty Images)
