Last May the only living male First World War combat veteran, British-born sailor Claude Choules, died in Australia at the age of 110. Britain's last survivor of the First World War trenches Harry Patch - known as 'The Last Tommy' - who died in July 2009 aged 111.Feb 7, 2012
The war was started by the leaders of Germany and Austria-Hungary. Vienna seized the opportunity presented by the assassination of the archduke to attempt to destroy its Balkan rival Serbia.Feb 12, 2014
Two British soldiers standing in a flooded communication trench during WW1. It is estimated that there were about 2,490km of trench lines dug during World War 1. Most trenches were between 1-2 metres wide and 3 metres deep.
The Allies included Britain, France, Russia, Italy and the United States. These countries fought against the Central Powers which included Germany, Austria-Hungary, Ottoman Empire and Bulgaria. Archduke Ferdinand, of Austria-Hungary, was assassinated by a Serb on June 28, 1914.