Codegease: Air and Land Warfare 1946

(A fanfiction of "Code Gease: Lelouch of the Rebellion" titled "codegease Cold Sky Eve 1945")
After years of struggle, the anti-fascist alliance is finally close to defeating Nazi Germany.
In order to save themselves, the Germans devised an incredibly unbelievable plan.
They are using a mysterious machine still in the experimental stage. They hope to open a door to another world and request their assistance.
They changed the world forever because of this.
But this did nothing to help Nazi Germany, who were still soundly defeated and eventually surrendered unconditionally.
But this change led to the rise of new forces.
Britannian Empire
The empire led by Emperor Charles firmly believed that conquering the world was their destiny.
The Empire launched an attack without any warning.
Fortunately, we are not completely unaware of their existence.
The Northern Alliance and ASEAN are regrouping their forces and starting afresh.
And brought back victory.