World War II was the global military conflict that took place between 1939 and 1945. It was the largest and deadliest war in history.
The war was waged between the Axis powers, chiefly Nazi Germany (whose invasion to Poland spurred the conflict), Fascist Italy and Japan, and the Allies, mainly the United States, Great Britain, and the Soviet Union. Originally, Germany surrendered in May 1945 and Japan surrendered in September 1945.
Enlisting into the American military, Steven Rogers was injected with a super-serum that transformed him into a super soldier: Captain America. However, sometime before this, Johann Schmidt was given an experimental version of the serum, turning him into the Red Skull.
Both clashed multiple times during the course of the war, with Captain America continuously thwarting the Skull's plans of global domination.
Dracula and Translyvania fought the Nazis and were in alliance with the Allies.