Chess or war: Pawn

Every 500 years, demons from an unknown place, set foot onto the continent of Aides. Every time humans, elves and dwarves have fought hard to repel them back into the portals they have come from. The last battle was 350 years ago, in medieval times, nations reunited and fought hard to save themselves from destruction. But this time, they had come earlier and no one had forseen this...