View of Rotterdam after German bombing during the Western Campaign in May 1940.

World War II in Europe

Germany rapidly conquered much of Europe and the Soviet Union from 1939 to 1942. Soviet victories over German forces reversed the course of the war in 1942–1943. With the Allies advancing from both the east and west, Germany surrendered in 1945.

During World War II, Germany overran much of Europe using a new tactic called the "Blitzkrieg" (lightning war). Blitzkrieg involved the massing of planes, tanks, and artillery. These forces would break through enemy defenses along a narrow front. Air power prevented the enemy from closing the breach. German forces encircled opposing troops, forcing them to surrender.

On September 1, 1939, Germany invaded Poland and started World War II. The Polish army was defeated within weeks. In 1940, Germany defeated Denmark, Norway, Belgium, the Netherlands, Luxembourg, and France. In April 1941, Germany defeated Yugoslavia and Greece. Yet Germany did not defeat Great Britain, which was protected from ground attack by the English Channel.

German forces attacked the Soviet Union in June 1941, pushing more than 600 miles to the outskirts of Moscow. A second German offensive in 1942 brought German soldiers to the shores of the Volga River and the city of Stalingrad. But the Soviet Union, together with Great Britain and the United States, which had entered the war against Germany in December 1941, turned the tide of battle against Germany.

In the east, the battle for Stalingrad proved a decisive turning point. After the defeat at Stalingrad in winter of 1942–1943, German troops began the long retreat. In April 1945, Soviet forces entered Berlin. In the west, Allied soldiers landed on June 6, 1944 (known as D-Day) in Normandy, France. More than two million Allied soldiers poured into France. In July, Allied forces broke out of the Normandy beachhead. The Allies continued the attack into Germany. In March 1945, Allied forces crossed the Rhine, advancing into the heart of Germany.

Nazi Germany surrendered in May 1945.

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Glossary