The Order believes that order in and of itself is like a god. Preserving order throughout the land and opposing forces of chaos (antithesis of order) is their purpose. They believe that there are evil "gods" which they oppose such as the chaos manifestation of Magna Serpanism's diety.
So, it is not like a conventional religion but it is also very large and has a very stable power base. While it hosts no official theocracies it has a long tradition of power and strength within the CE alliance and her allies, which has granted it much growth and strength.