The Dragon Wars were between the Calim Empire and the dragons in the Marching Mountains. It started when a flight of dragons destroyed the city of Calimport in circa −7790 DR. This event initiated a century of war pitting Calim and the genies against the dragons. By its end, every dragon in the Marching Mountains died at the hands and magic of the genies. The genies' magic rebuilt Calimport within a year of its initial destruction.