World War 2
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What was the first battle of World War 2?

192021

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01/22/2014

The first battle of World War II was the Battle of Westerplate in Poland that lasted seven days--1 September to 7 September 1939--as a result of the Allied Forces' declaration of war to Germany, Slovakia, and the Soviet Union due to their invasion of Poland. Hope that helps!
The first battle of world war 2 occured in Poland on September 1st 1939.