The European theater refers to the major area of conflict during World War II that took place in Europe. It involved numerous countries, including Germany, France, Britain, and the Soviet Union. The fighting began in 1939 and continued until 1945, with significant battles such as Stalingrad and D-Day shaping the course of the war. This theater was characterized by large-scale military operations, including land, air, and naval battles. The conflict ultimately led to the defeat of the Axis powers, primarily Nazi Germany, and resulted in significant changes in the political landscape of Europe, paving the way for the Cold War.