Founded in 17 ABY by the followers of Freedom Nadd's philosophy regarding the Jedi. Formed around the idea that Jedi are the protectors of the galaxy and should be willing to fight rather then debate. This philosophy was established due to the more political nature that the Jedi Order was taking on. Viewing the Jedi as more warrior like then diplomat like these Jedi prefer to act first in situations that require it rather then seeking a diplomatic solution.
The name Watchmen of the Order is derived from the Old Republic order. Watchmen were considered the guardians of the Order and were placed on various worlds put in charge of whole systems of planets as their guardian and protector.