World War One By Capricious Period: Jan 1, 1914 to Dec 31, 1918 World War One Period: Feb 12, 1914 to Feb 12, 1915 First Battle of Marne Jun 12, 1914 Archduke Ferdinand Killed Aug 3, 1914 German troops enter France and Belgium Period: Oct 12, 1914 to May 12, 1915 Battle(s) of Ypres Feb 12, 1915 Germany responds to blockade Feb 12, 1916 German Troops launch huge offensive attackk Period: Feb 12, 1916 to Feb 12, 1917 Battle of Somme Apr 12, 1916 Allies introduce tanks into war Jul 12, 1916 Allied Powers launch offensive attack Feb 1, 1917 Germany resumed U-Boat warfare Mar 18, 1917 Congress pass Selective Service Apr 4, 1917 Senate declares War Jun 1, 1917 US Workers begin constructing training camps Period: Oct 12, 1917 to Dec 12, 1917 Battle at Caporetto
