World War II

World War II (also called Second World War, WWII, and WW2) is a major war involving the United States of America, Great Britain, France, and Russia (in an alliance called the Allies) fighting against Nazi Germany. Among the people fighting for the Allies were Captain America, Logan, and the Six American Warriors. Red Skull fought for Germany. Logan and Cap were sent on a mission to free a captured scientist, but he turned against them and fled with the Nazis. Later, Logan found out that the scientist wasn't a traitor but an informant. Towards the end Red Skull secretly invaded New York City and constructed a large device to create his doomsday weapon. Captain America and the Six American Warriors found the facility but Cap and Skull were caught in a time vortex and appeared lost.

Background
In the comics Nick Fury and Dum Dum Dugan both fought in WWII, though this wasn't established in any series.