Timeline of World War One By GraceIvens 1882 Italy joins in alliance with Germany and Austria-Hungary to form triple alliance 1882 A triple entente is formed between Britain, Russia and France Period: 1905 to 1906 Morrocan Crisis Oct 6, 1908 Bosnian Crisis 1911 Agadir Incident Period: Oct 8, 1912 to May 30, 1913 The First Balkan War Period: Jun 16, 1913 to Jun 18, 1913 The Second Balkan War Jun 28, 1914 Assassination of Austrian Arch-Duke Franz Ferdinand Aug 4, 1914 Britain declares war on Germany Period: Oct 19, 1914 to Nov 30, 1914 Battle of the yrpes Apr 25, 1915 ANZAC landing at Gallipoli Jul 1, 1916 Battle of the Saomme This is the beginning of the battle Period: Jul 19, 1916 to Jul 20, 1916 Battle of Frommelles Oct 28, 1916 Conscription referendums defeated in Australia Apr 6, 1917 United States of America joins the war Period: Apr 11, 1917 to May 3, 1917 Battle of Bullecourt Period: Jul 31, 1917 to Nov 10, 1917 Battle of Paschendale Period: Apr 24, 1918 to Apr 27, 1918 Australia captures the town of Villers-Brittoneux May 31, 1918 John Monash takes command of the Australian Army Nov 11, 1918 Armistice with Germany Jun 28, 1919 Treaty of Versailes Sep 3, 1939 Britain declares war on Germany Sep 3, 1939 Australia declares war on Germany Oct 3, 1990 Germany becomes a nation