The Triad - Justice System

Law, Military and Religion are the three main powers to reign over the land of Astra. Its history started with the religious Triad of Tyr, Ilmater and Torm. Those three were the most common religions in Astra and people mostly worshipped all three at the same time.
Because it was such a large part of the culture, the people assigned a role to every god, each a symbol of one seat of power in the overall politics.
Tyr was assigned the role of Law, since his ideals were Justice and Morality, which should be the core elements of the Law.
Torm was assigned the role of Military, because his strength layed in Duty and Loyalty and these traits are most important for the one's defending the land and its people.
Ilmater was assigned the role of Religion. Its responsibility was to care for those who wouldn't be caught by the other two roles. Religion should offer compassion and forgiveness, and a helping hand to support those in need.
The religion of the Triad broke up, and the way of handeling politics in Astra divided into these three essential parts got lost. Astra struggled with multiple monarchs and dictators over the course of centuries, until the old way was restored though research [...].
Since about four centuries, the old order is back to Astra, dividing the power between Law, Military and Religion.