Allies of World War II
grouping of the victorious countries of World War II From Wikipedia, the free encyclopedia
The Allies, (formally referred to as the United Nations from 1942-1945) were a group of nations that fought against the Axis countries in World War II. They were successful in defeating the Axis nations. The war ended in 1945. The group of nations was later named the United Nations by U.S. President Franklin Roosevelt. The main great powers, sometimes called "The Big Three", were the United Kingdom, the United States, and the Soviet Union. Sometimes China was added to the list, making a "Big Four".
Allies of World War II | |||||||
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1939–1945 | |||||||
Anthem: United Nations on the March (unofficial) | |||||||
![]() A 1943 poster showing the flags of many of the members of the Allies, including the "Big Three"
The Big Three:
Full list
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Status | Military alliance | ||||||
Historical era | World War II | ||||||
• Franco-Polish alliance | February 1921 | ||||||
• Anglo-Polish alliance | August 1939 | ||||||
• Anglo-French War Council | September 1939 – June 1940 | ||||||
• First Inter-Allied Meeting | June 1941 | ||||||
• Anglo-Soviet alliance | July 1941 | ||||||
August 1941 | |||||||
• Declaration by United Nations | January 1942 | ||||||
• Anglo-Soviet Treaty | May 1942 | ||||||
November–December 1943 | |||||||
• Bretton Woods Conference | 1–15 July 1944 | ||||||
4–11 February 1945 | |||||||
April–June 1945 | |||||||
July–August 1945 | |||||||
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1939-1941
Poland was invaded by Germany on 1 September 1939, so Britain and France declared war two days later.
Many more countries joined the alliance after Germany invaded them. France fell after a German invasion from May - June 1940 and a puppet state was put in place, so the British and the remaining forces of the exiled governments later invaded the Vichy french territories. These freed lands were called Free France
Germany invaded the Soviet Union on 22 June 1941 and the Soviets allied with the British and the other allies.
The United States joined the war after the Japanese bombed Pearl Harbor.
Declaration by the United Nations

The alliance was formalised in the Declaration by United Nations signed on 1 January 1942. There were the 26 original signatories of the declaration; the Big Four were listed first:
Major Allied Powers
Other Allied Powers
Client and occupied states
British
Soviet sphere
Co-belligerent states
1942-1945
Advances in Eastern Europe and North Africa in late 1942 changed the course of the war and continued on other fronts until the war ended. (there were also slow advances in the pacific)
The allies invaded italy in 1943, after driving the axis out of Africa. And so Italy changed sides on 8 September 1943. and with German forces staying, a civil war began.
The Soviet Red Army continued advances against the axis, ending the siege of Leningrad, liberating Crimea, and invading Romania. On June 22 1944, operation Bargration was launched advancing to the Hungarian border and to Warsaw.
Meanwhile in Western Europe, D-Day was launched on June 6 1944 and the allies started advancing rapidly in august.
Romania changed sides in August after the Soviets were advancing. Bulgaria changed sides in September with the Soviets invading. Finland also changed sides in September.
The allies had advances in the Pacific. In the Solomon Islands, in Burma, and other Pacific islands.
On May 7 1945, Germany surrendered after 5 years and 8 months of fighting. In the Pacific, the allied liberated Burma and advanced in China, the Philippines, and Borneo. Atomic bombs were dropped on Japan and around the same time, the Soviets invaded Manchuria (a Japanese puppet state) and Japan surrendered on September 2 1945, ending World War II.
United Nations
The United Nations was formed on 24 October 1945, with France, China, The United Kingdom, The United States, and The USSR as the five permanent members of the United Nations Security Council (which met for the first time on 17 January 1946).

Members
These are the original 51 signatories (UNSC permanent members are asterisked):
Argentine Republic
Commonwealth of Australia
Kingdom of Belgium
Republic of Bolivia
United States of Brazil
Byelorussian Soviet Socialist Republic
Dominion of Canada
Republic of Chile
Republic of China*
Republic of Colombia
Republic of Costa Rica
Republic of Cuba
Czechoslovak Republic
Kingdom of Denmark
Dominican Republic
Republic of Ecuador
Kingdom of Egypt
Republic of El Salvador
Ethiopian Empire
French Republic*
Kingdom of Greece
Republic of Guatemala
Republic of Haiti
Republic of Honduras
British Raj
Imperial State of Iran
Kingdom of Iraq
Lebanese Republic
Republic of Liberia
Grand Duchy of Luxembourg
United Mexican States
Kingdom of the Netherlands
Dominion of New Zealand
Republic of Nicaragua
Kingdom of Norway
Republic of Panama
Republic of Paraguay
Republic of Peru
Commonwealth of the Philippines
Republic of Poland
Kingdom of Saudi Arabia
Union of South Africa
Syrian Republic
Republic of Turkey
Ukrainian Soviet Socialist Republic
Union of Soviet Socialist Republics*
United Kingdom of Great Britain and Northern Ireland*
United States of America*
Oriental Republic of Uruguay
United States of Venezuela
Democratic Federal Yugoslavia
Summary table
The Big Three
United Kingdom (from September 1939)
Soviet Union (from June 1941)
United States (from December 1941)
Allied combatants with governments-in-exile
Other Allied combatant states
China
Canada
Australia
New Zealand
India
South Africa
Southern Rhodesia
Newfoundland
Burma
Nigeria
Malta
Ceylon
Brazil
Mexico
Mongolia
Egypt
Cuba
Argentina
Nepal
Liberia
Iran
Saudi Arabia
Turkey
Chile
Colombia
Ecuador
Peru
Bolivia
Uruguay
Venezuela
Costa Rica
Panama
Haiti
Honduras
Dominican Republic
Nicaragua
El Salvador
Guatemala
Oman
French Indochina
Dutch East Indies
Syria
Lebanon
Former Axis powers
Cold War
Despite the successful creation of the United Nations, the alliance of the Soviet Union with the United States and with the United Kingdom ultimately broke down and evolved into the Cold War, which took place over the following half-century.
Timeline of allied nations entering the war
The following list denotes dates on which states declared war on the Axis powers, or on which an Axis power declared war on them. The Indian Empire had a status less independent than the Dominions.

1939
Poland (September 1 1939)
France (September 3 1939)
United Kingdom (September 3 1939)
Australia (September 3 1939)
New Zealand (September 3 1939)
Nepal (September 4 1939)
South Africa (September 6 1939)
Canada (September 10 1939)
Oman (September 10 1939)
1940
Norway (April 8 1940)
Denmark (April 9 1940)
Belgium (May 10 1940)
Luxembourg (May 10 1940)
Netherlands (May 10 1940)
Greece (October 28 1940)
1941
Yugoslavia (April 6 1941)
Soviet Union (June 22 1941)
Panama (December 7 1941)
United States (December 8 1941)
Costa Rica (December 8 1941)
Dominican Republic (December 8 1941)
El Salvador (December 8 1941)
Haiti (December 8 1941)
Honduras (December 8 1941)
Nicaragua (December 8 1941)
China (December 9 1941)
Cuba (December 9 1941)
Guatemala (December 9 1941)
Provisional governments or governments-in exile that declared war against the Axis in 1941
Provisional Government of the Republic of Korea (December 10 1941)
Czechoslovakia (government-in-exile) (December 16 1941)
1942
1943
1944
1945
Ecuador (February 2 1945)
Paraguay (February 7 1945)
Peru (February 12 1945)
Uruguay (February 15 1945)
Venezuela (February 15 1945)
Turkey (February 23 1945)
Egypt (February 24 1945)
Syria (February 26 1945)
Lebanon (February 27 1945)
Saudi Arabia (March 1 1945)
Finland (March 3 1945) - former ally of Germany in the Continuation War. Finland retroactively declared war on Germany from 15 September 1944.
Argentina (March 27 1945)
Chile (April 11 1945)
Mongolia (August 10 1945)
References
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