Section 928(3) in Police Regulations, Bengal , 1943
(3)Shirts. - Khaki twill with collar and tie as for wear with review order if to be worn with khaki jacket, or with Shakespeare collar attached without tie if to be worn without a jacket. In the latter case it should have a negligee front-four buttons, two breast patch pockets with 1 inch box pleat down centre, pointed flap with hole and button. Breastpockets to be 5 inches wide by 7 inches deep in proportion. Detachable shoulder straps of the same material with a small hole and button at the neck. Collar and shoulder straps should be well-starched. Badges of rank and shoulder letters as for khaki drill frock, half-sleeves. Buttons to be of khaki collar bone. Spine protectors if required.
