YPRES, BELGIUM - JULY 30: Dame Helen Mirren helps narrate as the story of the war in the Ypres region is told by performances and music set to a backdrop of visual projections on the facade of the Cloth Hall during commemorations marking the centenary of Passchendale on July 30, 2017 in Ypres, Belgium. Dignitaries and descendants of those who fought are gathering to mark the centenary of Passchendaele, the third battle of Ypres, on 30 and 31 July 2017. The campaign saw intense fighting over 3 months, 1 week and 3 days with historians currently agreeing that both sides suffered losses of around 260,000 casualties each. (Photo by Leon Neal/Getty Images)
