The Dumian-Demon Wars was a series of wars fought between the Empire of the Librarians of Dume -and later, the Northern and Southern halves of it- against the early Dark Legion of Demons, since the Apparition of Demons, at the 1.365 a.a.H to the Fall of Dume at the 1.676 a.a.H., though contemporary accounts only speak of a proper Demon-Dumian war at the 1.400 a.a.H
Being the first significant conflict between Demons and Humans, it was a predecessor to the Wars of the Power, and some historians actually see that this should be considered the First War of the Power, but this is a discussed position.
As result of the Dumian-Demon Wars, the Dumian Empire will be divided into two halves at the 1.486, and the northern Half will fall at 1.676 a.a.H, while the southern half will become the Unlic Empire of Uslen. The Kanov Vakkusta Empire will be destroyed as well, result of the demonic wars.
While successful in defeating the Dumians, the early Dark Legion suffered too heavy casualties and depended too heavily on allies and federated forces, and despite their victory, with the rise of Weseringian humans, Barlani Kanovs and interests of the Unlic to reconquer the fallen Dume, they will retreat to Polforia to reorganize and strengthen themselves.