The Werewolf Wars

The werewolf wars was a three hundred year conflict between various supernatural creatures which ended with "Unification" and the creation of the Mythical Ecumenical Monitoring Entity.

Causes
In 1483, werewolves declared war on vampires for reasons still unclear. Some academics claim the motive was a painting stolen in 1482, but all of those academics have gone missing. The declaration of war marked the begininning of a conflict that would later be known in the vampire world as "The werewolf wars". In werewolf culture, the conflict would be know as "That time when we killed a bunch of vampires then sniffed each other's behinds", so it's no surprise the name "werewolf wars" was the one that caught on.

Battles
The werewolf wars were marked by constant skirmishes between supernatural creatures. Zombies quickly sided with the vampires, and were able to turn the tide for a while in favor of the undead. It wasn't until werewolves convinced the human warlocks to join them, that the war became even. After over three centuries of battles, it was clear that both factions had reached a stalemate.

Resolution
The war was ended by some political maneuvering on count Dracula's part. He approached Francine Raine, daughter of the Werewolf Alpha and managed to resolve the conflict and reach a peace treaty. Some it was romance. Other say it was ransom.

Afertmath
All supernatural creatures signed a document (also supernatural) where a ruling council was created. The council's main responsibility was to preserve "Unification", the collaboration between all supernatural entities to avoid persecution and extinction and was aptly named Mythical Ecumenical Monitoring Entity, or M.E.M.E for short. Because of his accomplishments in the Werewolf Wars Dracula was given a permanent seat at the council.