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Germany and the Soviet Union were both involved ; German forces take over Poland through land and air forces.
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Poland, New Zealand, Australia, Canada, Czechoslovakia, Belgium, France, the United States and South Africa ; First major war to be brought by just air forces.
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Germany fought the Soviet Union ; Germany and the Soviet Union signed political pacts for strategical purposes.
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Moscow ; The Soviets were able to prevent the most serious attempt to capture their capital which made it significant.
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America fought Japan ; Pearl Harbor brought America as one and into unity.
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Germany with its allies fought the Soviet Union ; It was a major turning point in World War II
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U.S and U.K planned an invasion on French North Africa ; It was known as their largest American campaign to date in the Atlantic theater.
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Belgium, Denmark, France, Norway ; It was a huge force of over 150,000 soldiers in which the Allies attacked and gained a victory.
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German attack on Belgium, France, and Luxembourg ; It was the last major Nazi intervening during the World War II
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Soviet Union, Poland, Germany, USA, British, French came in later ; It was the last major battle in World War II