Between worlds and weapons

In a different world, but also similar to ours during World War II, the Raicy Empire, on a retreat, discovers ancient tombs containing ancient spells lost to time. Using these spells, they manage to exert global pressure to "win" the war, and ultimately control the entire continent. Now, ten years later, in the midst of a global political war, the empire finds a tomb containing a Greco-Roman structure. At first, it didn't seem like anything special, but they soon realized it was something much more powerful and valuable.

Inspirations: Portal: Jieitai Kano, Yojo Senki, and a bit of Wolfenstein

This is my first story, so I don't know if it will be very good. English isn't my primary language either, so there may be a few mistakes here and there.