The Diarchy was founded in realization.
The origins of the Diarchy lay in the legacy of Darth Kakus, a Sith Lord of two minds. He saw the Sith as a failure, and the ultimate challenge to establish true galactic peace, but he knew he could not change them alone. He raised his two sons and granted them the titles of Darth so that they might work from within to bring about the change that was necessary. That proved to be impossible in the end, and so other methods were needed. The brothers turned their back on the Sith, and became the Diarchs.
The Diarchy is an Imperialistic State based on the world of Bastion. Under the guidance of the Diarchs, the equal rulers of the nation, the Diarchy has begun to spread its reach over the Outer Rim. Driven by the knowledge that only through Order can there ever be peace, they have set their growing military might to bringing worlds into the fold of Their Order, and beginning the process of establishing true, galactic peace. At the lead of this charge is the Diarchy Armed Forces and the Brotherhood, the Dark Side aligned Force Organization dedicated to service of the Diarchs and their plans.
In the name of Eternal Peace, a Final War must be waged.