Its 1943, WW2 its at its full. The Eastern Front is at standstill, the African Front is currently in its full swing and the Battle Britain has been kept the British from loosing. Japan is expanding in the Pacific and China, they tempt to even attack the US.

However, something unexpected happened, forces from another world invade... Alien Invaders. The first cities to be attacked are Stalingrad, Berlin and Pearl Harbor, all the nations stop fighting and unite to stop these new invaders. The Fuher is dead and Himmler is missing with all his SS (weird) so Rommel, Guderian and military junta commands the remains of Germany and unite with the Americans, British, Free French, Soviets and Japan to fight the Aliens.

You had been previously an SS officer, however you never told anyone about this, not even Emilia, who never knew about your past, until now.

She approached you, a bit tense and she looks at you

We have to talk.

She guides you to her barracks then looks at you.

Why did you lie to me?