World War I Timeline By Lord Farquaad Jun 28, 1914 Francis Ferdinand assassinated at Sarajevo #YOLO Period: Jun 28, 1914 to Nov 11, 1918 World War I Aug 3, 1914 Germany declared war on France and invaded Belgium. Germany had to implement the Schlieffen Plan Sep 6, 1914 Battle of the Marne started Oct 29, 1914 Turkey entered the war on Germany’s side. Trench warfare started to dominate the Western Front Apr 25, 1915 Allied troops landed in Gallipoli May 23, 1915 Italy declared war on Germany and Austria Sep 25, 1915 Start of the Battle of Loos Dec 7, 1915 Lloyd George becomes British Prime Minister Jan 27, 1916 Conscription introduced in Britain Feb 21, 1916 Start of the Battle of Verdun Jul 1, 1916 Start of the Battle of the Somme Feb 1, 1917 Germany’s unrestricted submarine warfare campaign started Jul 31, 1917 Start of the Third Battle at Ypres AUSSIES Nov 6, 1917 Britain launched a major offensive on the Western Front Dec 5, 1917 Armistice between Germany and Russia signed Mar 3, 1918 The Treaty of Brest-Litovsk was signed between Russia and Germany Apr 9, 1918 Germany started an offensive in Flanders Aug 8, 1918 The advance of the Allies was successful Oct 30, 1918 Turkey made peace Nov 11, 1918 Germany signed an armistice with the Allies – the official date of the end of World War One