Section 658(e) in Police Regulations, Bengal , 1943
(e)There shall be for each district separate cadres for (i) Sub-Inspectors, (ii) Assistant Sub-Inspectors, (iii) head constables, (iv) naiks and (v) constables, both of the Unarmed Police and of the Special Armed Force, which shall be shown in the district gradation list maintained under regulation 913.
