events

By ClaudiaPerezTomas
  • Halt at the Marne

    Halt at the Marne

    Germany invades Belgium and France; stopped at the First Battle of the Marne.
  • Spark of War

    Spark of War

    Archduke Franz Ferdinand is assassinated in Sarajevo, triggering tensions.
  • War is Declared

    War is Declared

    Austria-Hungary declares war on Serbia — World War I begins.
  • Chemical Warfare Begins

    Chemical Warfare Begins

    Germany uses poison gas for the first time at the Second Battle of Ypres.
  • Lusitania Sinks

    Lusitania Sinks

    The RMS Lusitania is sunk by a German submarine, shocking the world.
  • Hell of Verdun

    Hell of Verdun

    The Battle of Verdun becomes one of the bloodiest battles in history.
  • Tanks Enter War

    Tanks Enter War

    Battle of the Somme — tanks are used in combat for the first time.
  • USA Joins the War

    USA Joins the War

    The United States enters the war on the side of the Allies.
  • Armistice Signed

    Armistice Signed

    The armistice is signed on November 11, ending fighting on the Western Front.