The Duchess Of Cornwall Attends The Vigil Of Prayer Service

LONDON, ENGLAND - AUGUST 04: Defence Secretary Michael Fallon attends The Vigil Of Prayer Service at Westminster Abbey on August 4, 2014 in London, England. Monday 4th of August marks the 100th anniversary of Great Britain declaring war on Germany. In 1914 British Prime Minister Herbert Asquith announced at 11pm that Britain was to enter the war after Germany had violated Beguium neutrality. The First World War lasted until 11th November 1918 and is recognised as one of the deadliest historical conflicts with millions of causalities. A series of events commemorating the 100th anniversary are taking place throughout the day. (Photo by Tristan Fewings/Getty Images)