I would like to add on this, That ww2 did not end.It was only paused and extended.
They needed to test the nazi spirit to see who could endure through time and space.

Thats why america and germany are being tested with an invasion.

They wanted to find out who is a real nazi and who is not.

Once he game is at a zero point. The war will resume. WIth the 4th reich on the offensive.