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World War I

  • Archduke Franz Ferdinand's Assassination

    On this day, Archduke Ferdinand and his wife in Austria-Hungary were assassinated by a Serbian.
  • Austria-Hungary and Serbia

    On this day, Austria-Hungary declared war on Serbia one month after the assassination.
  • Russia Mobilizes

  • Germany and Russia

    On this day, Germany declared war on Russia.
  • Germany and France

    On this day, Germany declared war on France.
  • Britain and Germany

    On this day, Britain declared war on Germany.
  • Austria-Hungary and Russia

    On this day, Austria-Hungary declared war on Russia.
  • France, Britain, and Austria-Hungary

    On this day, France and Britain declared war on Austria-Hungary.
  • U.S. Enters The War

    On this day, the U.S. joined the war supporting their allies, Russia, Britain, and France.
  • Armistice Signing

    The Allies and Germany signed an armistice on this day, causing the end of the war.
  • Treaty of Versailles

    The war officially ended after the Treaty of Versailles was signed on this day.