The allies of WWII are such:
Britain and her colonies & proctorates
America and her proctorates
France (& Later Free France)
Poland (which later fell)
Republic Spain (which later fell)
USSR (After the start of Operation Barbossa)
Israel, Palestine, Egypt (Britain's colonies)
China (Communist & Nationalist)
most Pacific islands (Philippines, Australia, New Zealand, etc)
etc.
The Axis of WWII are such:
Nazi Germany
Fascist Spain (leading power after the Spanish civil war)
Fascist Italy
Imperliast Japan
Vichy French
etc.
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