World War I By s887815@stu.mps-al.org Jun 28, 1914 Archduke Ferdinand Assassinated EnterAssassinated Jun 28, 1914 Austria-Hungary declares war on Serbia, beginning World War I EnterAHDW Aug 10, 1914 Austria-Hungary invades Russia EnterWar..Russia May 7, 1915 Sinking of the Lusitania Entersinking May 22, 1915 Italy declares war on Austria-Hungary EnterItaly Feb 21, 1916 Germany begins the attack on Verdun Enterbattle May 31, 1916 Naval Battle of Jutland EnterJutland Jul 1, 1916 Battle of the Somme EnterBOS Dec 18, 1916 Battle of Verdun ends with 550,000 French and 450,000 German casualties EnterEnd of Battle Apr 6, 1917 The United States declares war on Germany EnterUS&G Sep 12, 1918 American First Army attacks St. Mihiel salient EnterSt.Mihiel Sep 26, 1918 Allied forces attack at Meusse-Argonne, the final offensive of the war. EnterMeusse Nov 11, 1918 Germany signs the Armistice at Compiègne, ending World War I EnterArmistice Aug 24, 1921 United States signs separate peace treaties with Germany, Austria, and Hungary Entertreaty
