World War I
Date28 July 1914 – 11 November 1918 (1914-07-28 – 1918-11-11)
(4 years, 3 months and 2 weeks)
Peace treaties
  • Treaty of Versailles
    Signed 28 June 1919
    (4 years and 11 months)
  • Treaty of Saint-Germain-en-Laye
    Signed 10 September 1919
    (5 years, 1 month, 1 week and 6 days)
  • Treaty of Neuilly-sur-Seine
    Signed 27 November 1919
    (4 years, 1 month, 1 week and 6 days)
  • Treaty of Trianon
    Signed 4 June 1920
    (5 years, 10 months and 1 week)
  • Treaty of Sèvres
    Signed 10 August 1920
    (6 years, 1 week and 6 days)
  • United States–Austria Peace Treaty
    Signed 24 August 1921
    (3 years, 8 months, 2 weeks and 3 days)
  • United States–Germany Peace Treaty
    Signed 25 August 1921
    (4 years, 4 months, 2 weeks and 5 days)
  • United States–Hungary Peace Treaty
    Signed 29 August 1921
    (3 years, 8 months, 3 weeks and 1 day)
  • Treaty of Lausanne
    Signed 24 July 1923
    (8 years, 8 months, 3 weeks and 4 days)
Location
Europe, Africa, the Middle East, the Pacific Islands, China, Indian Ocean, North and South Atlantic Ocean
Result

Allied victory

  • Central Powers victory on the Eastern Front nullified by defeat on the Western Front
  • Fall of all continental empires in Europe (including Germany, Russia, Turkey and Austria-Hungary)
  • Russian Revolution and Russian Civil War – the collapse of the Russian Empire and the subsequent formation of the Soviet Union
  • Beginning of Turkish War of Independence
  • Widespread unrest and revolutions throughout Europe and Asia
  • Rise of Fascism in Europe
  • Creation of the League of Nations (more...)
Territorial
changes
  • Formation of new countries in Europe and the Middle East
  • Transfer of German colonies and territories, regions of the former Ottoman Empire, regions of the former Austro-Hungarian Empire and Soviet Union territories to other countries
  • Belligerents
    Commanders and leaders
    Strength
    Casualties and losses
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