WW1 Timeline

By May15
  • Archduke Franz Ferdinand of Austria and his wife, Sophie, are assassinated by a Bosnian Serb nationalist in Sarajevo.

    Archduke Franz Ferdinand of Austria and his wife, Sophie, are assassinated by a Bosnian Serb nationalist in Sarajevo.

  • World War I begins when Austria-Hungary declares war on Serbia.

    World War I begins when Austria-Hungary declares war on Serbia.

  • Germany declares war on Russia, France, and Belgium. Britain declares war on Germany

    Germany declares war on Russia, France, and Belgium. Britain declares war on Germany

  • Austria declares war on Russia. Montenegro declares war on Austria. France declares war on

    Austria declares war on Russia. Montenegro declares war on Austria. France declares war on

  • The First Battle of the Marne begins. The Germans had advanced to within 30 miles of Paris, but over the next two days, the French are reinforced by 6,000 infantrymen who are transported to the front by hundreds of taxis.

    The First Battle of the Marne begins. The Germans had advanced to within 30 miles of Paris, but over the next two days, the French are reinforced by 6,000 infantrymen who are transported to the front by hundreds of taxis.

    The Germans dug in the north of the Aisne River, and the trench warfare that is to typify the Western Front for the next four years begins
  • Britain and France declare war on the Ottoman Empire.

    Britain and France declare war on the Ottoman Empire.

  • The Second Battle of Ypres begins. The German army initiates the modern era of chemical warfare by launching a chlorine attack on Allied trenches.

    The Second Battle of Ypres begins. The German army initiates the modern era of chemical warfare by launching a chlorine attack on Allied trenches.

    Some 5,000 French and Algerian troops are killed. By war’s end, both sides have used massive quantities of chemical weapons, causing an estimated 1,300,000 casualties, including 91,000 fatalities.
  • The British ocean liner Lusitania is torpedoed by a German U-boat off the southern coast of Ireland. It sinks in just 18 minutes, and nearly 1,200 people are killed, including 128 U.S. citizens

    The British ocean liner Lusitania is torpedoed by a German U-boat off the southern coast of Ireland. It sinks in just 18 minutes, and nearly 1,200 people are killed, including 128 U.S. citizens

    The ship had been carrying over 170 tons of rifle ammunition and artillery shells, and Germany felt fully justified in treating the Lusitania as a legitimate target in a declared war zone.
  • The British and German fleets meet 60 miles off the coast of Jutland, Denmark, in the war’s only major encounter between the world’s two largest sea powers

    The British and German fleets meet 60 miles off the coast of Jutland, Denmark, in the war’s only major encounter between the world’s two largest sea powers

    The British and German fleets meet 60 miles off the coast of Jutland, Denmark, in the war’s only major encounter between the world’s two largest sea powers. Although a naval arms race between Britain and Germany had been one of the causes of World War I, the clash of the battleships is largely indecisive
  • The United States declares war on Germany. In his address to Congress four days earlier, U.S. Pres.

    The United States declares war on Germany. In his address to Congress four days earlier, U.S. Pres.

    Woodrow Wilson had cited Germany’s practice of unrestricted submarine warfare and the “Zimmermann Telegram” as key reasons behind the abandonment of his long-standing policy of neutrality
  • Germany and the Allies conclude an armistice based largely on Wilson’s Fourteen Points

    Germany and the Allies conclude an armistice based largely on Wilson’s Fourteen Points