Policemen and firemen of the City of Inkster shall be subject to normal retirement as hereinafter provided:
(a) Original members who are fifty-five years of age and whose services with either or both the fire and police force shall total twenty years, provided that the amount of time spent in the United States military, naval or marine service by any fireman and policeman who left the force of which he was a member to enter such United States service during World War II, future wars or military service, and who also returned to either force within six months after an honorable discharge from said United States service, shall be counted as a part of the aforesaid twenty years service.
(b) New members and employee members who are fifty-five years of age and whose services with either or both the fire and police force shall total twenty-five years, provided that the amount of time spent in the United States military, naval or marine service by any fireman and policeman who leaves the force of which he is a member to enter such United States service, and who returns to either force within six months after an honorable discharge from said United States service, shall be counted as part of the aforesaid twenty-five years service.
(c) An employee member may remain in service only until his sixtieth birthday unless the head of his department requests that he be allowed to remain longer, but in no event may a member remain in service beyond his sixty-fifth birthday.
(d) Members on normal retirement under the predecessor Village of Inkster Retirement System for Policemen and Firemen as of the effective date shall be continued on said normal retirement benefit in a monthly amount as it exists on the effective date of this Chapter 18 but subject thereafter to the conditions and provisions of this Chapter 18; provided, however, that at the death of any such retired member, benefits to his dependents if living shall be in accordance with Section 18.9 hereof as though he were a disability retirant or if no dependent as therein defined be living at his death, then death benefits shall be in accordance with paragraph (d) of Section 18.6 hereof.