Soldiers may wish to become a Knight.
Knights perform many duties for their guild. They will be required to lead soldiers into battle. Help head up the peace keeping forces within a guild. Be bodyguards to members. For lessor crimes they can act as judge handing out punishments short of banishment or execution.
Reg's needed to become a Knight are Healers and Shamen as well as Proctor.
Once you have all your reg's you can apply with your Guild Commander.
It is from the Reg'd Knighthood that Trilogy Judges are selected.