The European Theater refers to the area of conflict in Europe during World War II, where major battles and military operations took place. It involved multiple countries, including the United Kingdom, Germany, France, and the Soviet Union. The theater is characterized by significant events such as the D-Day invasion and the Battle of Stalingrad, which were crucial in determining the outcome of the war. The European Theater can be divided into two main fronts: the Western Front and the Eastern Front. The Western Front saw battles primarily between the Allies and Axis powers, while the Eastern Front involved intense fighting between the Soviet Union and Nazi Germany. The theater ultimately concluded with the unconditional surrender of Germany in May 1945.