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After dying as a soldier for his alien overlords, Elias Varis is reincarnated decades into the past with a System, before humanity’s enslavement. The Prometheus System, a powerful interface that grants him a photographic memory and unlimited untapped knowledge, decades ahead of his time.

Armed with cutting, edge military strategies, futuristic technology, and a mind that processes information like a supercomputer, Elias knows that Earth is doomed unless he changes its fate. To unite humanity and prepare for the inevitable invasion, he joins the Western Military Academy, hiding his abilities while secretly shaping the foundations of war.

With time running out, Elias must outthink, outbuild, and outfight an empire that hasn’t even arrived yet.

 Warning: Reincarnation, military sci-fi, and a broken OP system ahead! Oh, and just so you know, all chapters on Webnovel are free! 

The Thinnest Armor in History