What was World War 2 called at the time?

At the time, World War II was often referred to as the "Second World War" or simply "the war." In various nations, it was also described in terms of its specific theaters, such as "the European War" or "the Pacific War." Additionally, in some contexts, it was referred to as "the Great Patriotic War" in the Soviet Union, particularly in relation to the fight against Nazi Germany.