Service with a law enforcement unit or firefighting unit to which the provisions of P.L. 1944, c.255 (C.43:16A-1 et seq.) apply in an appointive capacity with administrative or supervisory duties over policemen or firemen or any combination thereof by any person who not more than six months prior to such service served as a member of that or any other law enforcement unit or firefighting unit, as the term "member" is defined in section 1 of P.L. 1944, c.255 (C.43:16A-1), shall be deemed to be service as a member under and for all the purposes of the provisions of the act of which this act is a supplement.
N.J.S. § 43:16A-3.1