Participants in World War I

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World War I on 1 August 1914: Countries of the Allies / Entente Powers Colonies, occupations, protectorates, and territories of the Allies / Entente Powers Countries of the Central Powers Colonies, protectorates, and territories of the Central Powers Condominiums between the German Realm and Kingdom of Belgium Neutral colonies, condominiums, protectorates, and territories Neutral countries and non-state actors Stateless territory World War I on 1 August 1914.png
World War I on 1 August 1914:
  Countries of the Allies / Entente Powers
  Colonies, occupations, protectorates, and territories of the Allies / Entente Powers
  Countries of the Central Powers
  Colonies, protectorates, and territories of the Central Powers
  Condominiums between the German Realm and Kingdom of Belgium
   Neutral colonies, condominiums, protectorates, and territories
  Neutral countries and non-state actors
  Stateless territory
World War I on 11 November 1918: Countries and non-state actors of the Allies / Entente Powers Colonies, condominiums, occupations, protectorates, and territories of the Allies / Entente Powers Countries, condominiums, and non-state actors of the Central Powers Colonies, occupations, protectorates, and territories of the Central Powers Occupied territory by the Russian Socialist Federative Soviet Republic Countries and non-state actors allied to the Russian Socialist Federative Soviet Republic Neutral colonies, protectorates and territories Neutral countries and non-state actors Stateless territory World War I on 11 November 1918.png
World War I on 11 November 1918:
  Countries and non-state actors of the Allies / Entente Powers
  Colonies, condominiums, occupations, protectorates, and territories of the Allies / Entente Powers
  Countries, condominiums, and non-state actors of the Central Powers
  Colonies, occupations, protectorates, and territories of the Central Powers
  Occupied territory by the Russian Socialist Federative Soviet Republic
  Countries and non-state actors allied to the Russian Socialist Federative Soviet Republic
  Neutral colonies, protectorates and territories
  Neutral countries and non-state actors
  Stateless territory

This is a list of countries that participated in World War I, sorted by alphabetical order.

World War I 1914–1918 global war originating in Europe

World War I, also known as the First World War or the Great War, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918. Contemporaneously described as "the war to end all wars", it led to the mobilisation of more than 70 million military personnel, including 60 million Europeans, making it one of the largest wars in history. It is also one of the deadliest conflicts in history, with an estimated nine million combatants and seven million civilian deaths as a direct result of the war, while resulting genocides and the 1918 influenza pandemic caused another 50 to 100 million deaths worldwide.

Contents

Allies / Entente Powers

Colonies, condominiums, countries, occupations, protectorates, and territories
Alash Autonomy former state

Alash Autonomy was a Kazakh state that existed between December 13, 1917, and 1918, on, approximately, the territory of the present-day Republic of Kazakhstan. The capital city was Semey, then known as "Alash-qala".

Canada Country in North America

Canada is a country in the northern part of North America. Its ten provinces and three territories extend from the Atlantic to the Pacific and northward into the Arctic Ocean, covering 9.98 million square kilometres, making it the world's second-largest country by total area. Canada's southern border with the United States, stretching some 8,891 kilometres (5,525 mi), is the world's longest bi-national land border. Its capital is Ottawa, and its three largest metropolitan areas are Toronto, Montreal, and Vancouver. As a whole, Canada is sparsely populated, the majority of its land area being dominated by forest and tundra. Consequently, its population is highly urbanized, with over 80 percent of its inhabitants concentrated in large and medium-sized cities, with 70% of citizens residing within 100 kilometres (62 mi) of the southern border. Canada's climate varies widely across its vast area, ranging from arctic weather in the north, to hot summers in the southern regions, with four distinct seasons.

Centrocaspian Dictatorship former country

The Centro-Caspian Dictatorship, also called Central-Caspian Dictatorship, was a short-lived anti-Soviet administration proclaimed in the city of Baku during World War I. Created from an alliance of Russian Socialist-Revolutionaries, Mensheviks and the Dashnaks, it replaced the Bolshevik Baku Commune in a bloodless coup d'état on July 26, 1918, and fell on September 15, 1918, when Ottoman-Azeri forces captured Baku.

Non-state actors

Central Powers

Colonies, condominiums, countries, occupations, protectorates, and territories
Non-state actors

Russia / Russian Soviet Republic / Russian Socialist Federative Soviet Republic and allies

Non-state actors

Neutral countries

Declared neutral colonies, condominiums, countries, occupations, protectorates, and territories
De facto netural colonies, condominiums, countries, occupations, protectorates, and territories
Non-state actors

Notes

  1. ↑ Gave naval assistance to the United Kingdom
  2. ↑ Non-belligerent
  3. ↑ Traded with both sides
  4. ↑ Civil dispute and Allied Campaign against Ottomans
  5. ↑ Switzerland did declare a "state of siege"
  6. ↑ Received a German diplomatic mission trying to convince it to act against the British in India
  7. ↑ Supported Central Powers and was on the verge of entering the war before Iyasu V's dethronement
  8. ↑ Never declared war on the Central Powers despite being invaded and occupied by Germany
  9. ↑ Had a customs and monetary union with Austria-Hungary
  10. ↑ 20 volunteers joined on the Italian (Allied) side. Cut diplomatic ties with Austria–Hungary, but it never entered the war
  11. ↑ Declined an alliance with Germany (see Zimmermann Telegram)

Declarations of war

European military alliances prior to the war. Map Europe alliances 1914-en.svg
European military alliances prior to the war.
Allies and Central Powers, early August 1914. World War I 1914 08 04.png
Allies and Central Powers, early August 1914.
Allies and Central Powers, mid 1918. World War I 1918 05.png
Allies and Central Powers, mid 1918.

The following table shows the timeline of the several declarations of war among the belligerent powers. Entries on a yellow background show severed diplomatic relations only, not actual declarations of war.

DateDeclarerOn
1914
July 28Flag of Austria-Hungary (1869-1918).svg Austria-HungaryState Flag of Serbia (1882-1918).svg Serbia
August 1Flag of the German Empire.svg GermanyFlag of Russia (1696-1917).svg Russia
August 3Flag of the German Empire.svg GermanyFlag of France (1794-1958).svg France
August 4Flag of the German Empire.svg GermanyFlag of Belgium.svg Belgium
Flag of the United Kingdom.svg United KingdomFlag of the German Empire.svg Germany
August 5Flag of the Kingdom of Montenegro.svg MontenegroFlag of Austria-Hungary (1869-1918).svg Austria-Hungary
August 6Flag of Austria-Hungary (1869-1918).svg Austria-HungaryFlag of Russia (1696-1917).svg Russia
State Flag of Serbia (1882-1918).svg SerbiaFlag of the German Empire.svg Germany
August 9Flag of the Kingdom of Montenegro.svg MontenegroFlag of the German Empire.svg Germany
August 11Flag of France (1794-1958).svg FranceFlag of Austria-Hungary (1869-1918).svg Austria-Hungary
August 12Flag of the United Kingdom.svg United KingdomFlag of Austria-Hungary (1869-1918).svg Austria-Hungary
August 22Flag of Austria-Hungary (1869-1918).svg Austria-HungaryFlag of Belgium.svg Belgium
August 23Merchant flag of Japan (1870).svg JapanFlag of the German Empire.svg Germany
August 25Merchant flag of Japan (1870).svg JapanFlag of Austria-Hungary (1869-1918).svg Austria-Hungary
October 5Flag of Albania 1920.svg AlbaniaFlag of Austria-Hungary (1869-1918).svg Austria-Hungary
November 1Flag of Russia (1696-1917).svg RussiaFlag of the Ottoman Empire.svg Ottoman Empire
November 2State Flag of Serbia (1882-1918).svg SerbiaFlag of the Ottoman Empire.svg Ottoman Empire
November 3Flag of the Kingdom of Montenegro.svg MontenegroFlag of the Ottoman Empire.svg Ottoman Empire
November 5Flag of the United Kingdom.svg United Kingdom
Flag of France (1794-1958).svg France		Flag of the Ottoman Empire.svg Ottoman Empire
1915
May 23Flag of Italy (1861-1946) crowned.svg ItalyFlag of Austria-Hungary (1869-1918).svg Austria-Hungary
August 21Flag of Italy (1861-1946) crowned.svg ItalyFlag of the Ottoman Empire.svg Ottoman Empire
October 14Flag of Bulgaria.svg BulgariaState Flag of Serbia (1882-1918).svg Serbia
October 15Flag of the United Kingdom.svg United Kingdom
Flag of the Kingdom of Montenegro.svg Montenegro		Flag of Bulgaria.svg Bulgaria
October 16Flag of France (1794-1958).svg FranceFlag of Bulgaria.svg Bulgaria
October 19Flag of Italy (1861-1946) crowned.svg Italy
Flag of Russia (1696-1917).svg Russia		Flag of Bulgaria.svg Bulgaria
1916
March 9Flag of the German Empire.svg GermanyFlag of Portugal.svg Portugal
March 15Flag of Austria-Hungary (1869-1918).svg Austria-HungaryFlag of Portugal.svg Portugal
August 27Flag of Romania.svg RomaniaFlag of Austria-Hungary (1869-1918).svg Austria-Hungary
Flag of Italy (1861-1946) crowned.svg ItalyFlag of the German Empire.svg Germany
August 28Flag of the German Empire.svg GermanyFlag of Romania.svg Romania
August 30Flag of the Ottoman Empire.svg Ottoman EmpireFlag of Romania.svg Romania
November 1Flag of Bulgaria.svg BulgariaFlag of Romania.svg Romania
1917
April 6Flag of the United States (1912-1959).svg United StatesFlag of the German Empire.svg Germany
April 7Flag of Cuba.svg Cuba
Flag of Panama.svg Panama		Flag of the German Empire.svg Germany
April 10Flag of Bulgaria.svg BulgariaFlag of the United States (1912-1959).svg United States
April 13Flag of Bolivia (state).svg BoliviaFlag of the German Empire.svg Germany
April 20Flag of the Ottoman Empire.svg Ottoman EmpireFlag of the United States (1912-1959).svg United States
July 2Flag of Greece (1822-1978).svg GreeceFlag of the German Empire.svg Germany
Flag of Austria-Hungary (1869-1918).svg Austria-Hungary
Flag of the Ottoman Empire.svg Ottoman Empire
Flag of Bulgaria.svg Bulgaria
July 22Flag of Thailand.svg SiamFlag of the German Empire.svg Germany
Flag of Austria-Hungary (1869-1918).svg Austria-Hungary
Flag of the Ottoman Empire.svg Ottoman Empire
August 4Flag of Liberia.svg LiberiaFlag of the German Empire.svg Germany
August 14Flag of the Republic of China 1912-1928.svg ChinaFlag of the German Empire.svg Germany
Flag of Austria-Hungary (1869-1918).svg Austria-Hungary
October 6Flag of Peru (1825-1950).svg PeruFlag of the German Empire.svg Germany
October 7Flag of Uruguay.svg UruguayFlag of the German Empire.svg Germany
October 26Flag of Brazil (1889-1960).svg BrazilFlag of the German Empire.svg Germany
December 7Flag of the United States (1912-1959).svg United StatesFlag of Austria-Hungary (1869-1918).svg Austria-Hungary
December 7Flag of Ecuador.svg EcuadorFlag of the German Empire.svg Germany
December 10Flag of Panama.svg PanamaFlag of Austria-Hungary (1869-1918).svg Austria-Hungary
December 16Flag of Cuba.svg CubaFlag of Austria-Hungary (1869-1918).svg Austria-Hungary
1918
April 23Flag of Guatemala.svg GuatemalaFlag of the German Empire.svg Germany
May 8Flag of Nicaragua.svg NicaraguaFlag of the German Empire.svg Germany
Flag of Austria-Hungary (1869-1918).svg Austria-Hungary
May 23Flag of Costa Rica (state).svg Costa RicaFlag of the German Empire.svg Germany
July 12Flag of Haiti (1859-1964).svg HaitiFlag of the German Empire.svg Germany
July 19Flag of Honduras.svg HondurasFlag of the German Empire.svg Germany
November 10Flag of Romania.svg RomaniaFlag of the German Empire.svg Germany

See also

Notes and references

    1. ^ British Empire was the common term for the United Kingdom and its overseas possessions at this time. The term refers to the colonies it controlled, to the Indian Empire, which, while not officially designated a colony, was functionally indistinguishable from one, and the British Dominions - former colonies which were self-governing in most respects but whose foreign policy was controlled by London; Australia, Canada, Newfoundland, New Zealand and South Africa. At that time, the United Kingdom of Great Britain and Ireland also included the entire island of Ireland.
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