Attachment
(Rule)Description: Priests must always be attached to other units,. and only one may be attached to each. Priests may be attacked to the following units: Celestians, Battle Sister Squads, Inquisitorial Strom Troops (and Adeptus Arbites), Dominions, Sisters Repentia, Inducted Imperial Guard Infantry Squads, or Inducted Imperial Guard Armoured Fist Squads.