Hold the line.

In an alternate timeline, the russian empire never fell, and World war 2 never happens.
But an enigmatic alien race nicknamed, "The Pale men" have breached through Germainia and Franksen in 1941. The United Nations defense core, which was created to combat this threat no longer exists. It's every nation for themselves.

In 1942, the Russian empire, The united kingdoms and the American Union are believed to be the remaining nations in the world that haven't fell to the Pale men.
The mysterious solider known as,"The Officer" embarks into Stalingrad, one of the few cities left that is still under siege by the Pale men.

What is discovered, changes everything.