The Acolytes Handbook
An unofficial supplement I use to improve the Acolytes standings within the Holy Inquisition (may change with the publication of new official supplements). Acolyte Handbook
Commissar: Play one of the few, the proud, the merciless.
Sister of Silence: Not much for a conversation but really great at what they do.
This suppliment contains details on the use of vehicles from horses to tanks. A must have for any pilot oriented character to study: Apocrypha Vehicles