Names of men killed in Passchendaele battle read out during service

The names of men killed at Passchendaele have been read out at a service to mark 100 years since the start of the battle.

Half a million were killed, wounded or declared missing during the World War One conflict - which lasted from July to October of 1917.

The names of some of those were read out at a centenary service in Belgium attended by the Duke and Duchess of Cambridge.