First World War By AneRaposo Jun 28, 1914 The Archduke Franz Ferdinand assassinated at Sarajevo. Period: Jun 28, 1914 to Nov 11, 1918 First World War Jul 19, 1914 Council of Austro-Hungarian Ministers approve of draft ultimatum to Serbia. Aug 5, 1914 Montenegro declares war on Austria-Hungary Sep 4, 1914 Battle of the Grand Couronné (Nancy) begins Dec 25, 1914 British seaplane raid on Cuxhaven. Jul 15, 1915 National Registration Act becomes law in Great Britain Dec 28, 1915 Evacuation of remainder of Gallipoli Peninsula ordered Jan 1, 1916 King of Serbia arrives at Salonika Aug 25, 1916 Russian forces cross the Danube into the Dobrudja to assist the Rumanian forces Jan 23, 1917 Harwich flotilla action with German 6th torpedo boat flotilla in the North Sea Jun 25, 1917 First contingent of United States troops arrives in France Jan 2, 1918 Air Ministry formed in Great Britain. Dec 31, 1918 Ufa and Sterlitamak (East Russia) taken by Bolshevik forces.