Section 732(3)(x) in Police Regulations, Bengal , 1943
(x)If members of the Auxiliary Force desire to take part in a parade held under clauses (ii) to (v) they must be treated as regular troops while on parade and take the right of the line. The precedence, etc., of the officers is regulated by the rules, customs and instructions applying to the regular Army and Auxiliary Forces. At ceremonial parades at which the military and police are present, the question as to whether and when a civilian (Commissioner, District Magistrate) should be invited to take the salute is one for the good sense and discretion of the senior military officer. In coming to a decision he will no doubt consider the relative precedence of the invitee and that the troops would themselves prefer to pay a compliment to one who is known to them even if not personally.