| World War I |
|---|
Clockwise from top: Trenches on the Western Front; a British Mark IV Tank crossing a trench; Royal Navy battleship HMS Irresistible sinking after striking a mine at the Battle of the Dardanelles; a Vickers machine gun crew with gas masks, and German Albatros D.III biplanes |
| Date | 28 July 1914 – 11 November 1918 (Armistice) Treaty of Versailles signed 28 June 1919 | | Location | Europe, Africa, the Middle East, and the Pacific Islands (briefly in China) | | Result | Allied victory - End of the German, Russian, Ottoman, and Austro-Hungarian empires
- Formation of new countries in Europe and the Middle East
- Transfer of German colonies and regions of the former Ottoman Empire to other powers
- Establishment of the League of Nations.
| |
| Belligerents |
Allied (Entente) Powers
 France
 British Empire
 Russian Empire (1914–17)
 Italy (1915–18)
 United States (1917–18)
 Japan
 Romania (1916–18)
 Serbia
 Belgium
 Greece (1917–18)
 Portugal (1916–18)
 Montenegro (1914–16)
and others
| Central Powers  German Empire
 Austria-Hungary
 Ottoman Empire
 Bulgaria (1915–18)
|
| Commanders and leaders |
Leaders and commanders
Aristide Briand
Georges Clemenceau
Ferdinand Foch
George V
H.H. Asquith
David Lloyd George
Nicholas II
Alexander Kerensky
Antonio Salandra
Vittorio Orlando
Woodrow Wilson
John Pershing
Ferdinand I
Peter I
and others | Leaders and commanders
Wilhelm II
Paul von Hindenburg
Erich Ludendorff
Franz Joseph I
Karl I
Mehmed V
İsmail Enver
Ferdinand I
and others |
| Strength |
| Allies 15,000,000 8,317,000 5,200,000 5,000,000+ 4,000,000 660,000 420,000 267,000 250,000 40,000+ 33,000 Total: 39,087,000+ (estimated) | Central Powers 13,000,000 7,800,000 2,000,000+ 1,200,000 Total: 24,000,000+ (estimated) |
| Casualties and losses |
Military dead:
5,525,000
Military wounded:
12,831,500
Military missing:
4,121,000
Total:
22,477,500 KIA, WIA
| Military dead:
4,386,000
Military wounded:
8,388,000
Military missing:
3,629,000
Total:
16,403,000 KIA, WIA
|
