Dosha was established by soldiers of the Yamato Empire as a fort and invasion point from which to take control of Harvor Island during the Yamatian Invasion. There was initially not much there, besides military encampments and a fort. There was no one living there that was not a member of the Yamatian military during the Great War. After the Cataclysm, nearby Sarquil tribes settled in and turned it into a growing town. After a brief dispute, the Sarquil allowed some Yamatians who had renounced their ways to remain in the town and live among them.