The European Theatre 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 theatre is characterized by significant battles such as the Battle of Stalingrad and the D-Day invasion, which were crucial in determining the outcome of the war. The conflict in the European Theatre began with the invasion of Poland by Nazi Germany in 1939 and ended with the unconditional surrender of Germany in May 1945. This theatre was marked by intense military strategies, large-scale troop movements, and significant civilian impact, shaping the political landscape of post-war Europe.