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Germany invaded Poland. The Polish army was defeated within weeks of the invasion.
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The Battle of the Atlantic was the longest continuous military campaign in World War II, running from 1939 to the defeat of Germany in 1945.
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the German invasion of France and the Low Countries
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The Battle of Britain was the first major campaign to be fought entirely by air forces, and was also the largest and most sustained aerial bombing campaign to that date.
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Germany's plan to invade the United Kingdom during the Second World War,
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Germans were pushed back from Moscow and could never mount an offensive simultaneously along the entire strategic Soviet-German front again.
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was a prolonged military operation resulting from the failure of the German Army Group North to capture Leningrad
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Aircraft and midget submarines of the Imperial Japanese Navy began an attack on the U.S.
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a major naval battle in the Pacific Theater of World War II between the Imperial Japanese Navy and Allied naval and air forces from the United States and Australia.
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the most important naval battle of the Pacific Campaign of World War II
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The Guadalcanal campaign was a significant strategic combined arms victory by Allied forces over the Japanese in the Pacific theatre.
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major battle of World War II in which Nazi Germany and its allies fought the Soviet Union for control of the city of Stalingrad in southwestern Russia
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The Soviet Union had pressed the U.S. and Britain to start operations in Europe and open a second front to reduce the pressure of German forces on the Soviet troops.
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during the Italian Campaign of World War II, was an Allied amphibious landing against Axis forces in the area of Anzio and Nettuno, Italy.
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The Normandy landings, codenamed Operation Neptune, were the landing operations of the Allied invasion of Normandy, in Operation Overlord, during World War II.
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was an unsuccessful Allied military operation, fought in the Netherlands and Germany in the Second World War. It was the largest airborne operation up to that time.[nb 5
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The German offensive was supported by several subordinate operations known as Unternehmen Bodenplatte, Greif, and Währung.
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The Battle of Berlin, designated the Berlin Strategic Offensive Operation by the Soviet Union, was the final major offensive of the European Theatre of World War II.
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was a major battle in which the United States fought for and captured the island of Iwo Jima from the Empire of Japan
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the largest amphibious assault in the Pacific War of World War II
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Nagasaki was the target of the United States' second atomic bomb attack