1. Faction

The Cassians are the heart and soul of the Dominion. Their fervent, unwavering belief often serves as a compass for the empire during turbulent times—and can serve to focus the more extreme proclivities of their Dominion counterparts. Most Cassian citizens serve at least a few years in the Dominion military, unless they have already dedicated their lives to the Vigilant Church.

Source: Loremageddon