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Germany invades Poland, marking what many regard as the start of the war, though Japan invaded China on July 7, 1937. Two days later, France and the United Kingdom declare war on Germany.
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World War II officially starts
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Great Britain and France declare war on Germany after their invasion of Poland 2 days later.
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Germany launches an air war, known as the Battle of Britain, against the United Kingdom.
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The battle of the first big victory in the British offensive.
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Battle fought between Nazi Germany and the Soviet Union from September 30, 1941 to January 7, 1942.
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The United States declared war on Japan because of the bombing of Pearl Harbor
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The Japanese Empire captured the British stronghold of Singapore, with fighting lasting from 8-15 of February 1942.
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Prusso-Russian army, that was massively outnumbered, was pushed back by Napoleon but escaped destruction, with some sources claiming that Marshal Michel Ney failed to block their retreat. Took place in Germany.
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German armed forces surrendered unconditionally in the west on May 7 and in the east on May 9, 1945.