(1) Every able-bodied male citizen of Colorado and those who have declared their intention to become citizens of the United States residing therein between the ages of eighteen and sixty-four years, except persons exempt by law, are subject to military duty in the state defense force. However, the following persons or classes of persons are exempted from military service:

(a) Persons exempt by any statute of this state;

(b) The members of any regularly organized fire or police department of any city, county, city and county, or town if such members are on full-time duty with the fire or police departments or if such members are found by the governor to be necessary for the health, welfare, or protection of the community;

(c) Those permanently disqualified for military service because of physical disability and having in their possession a certificate of some licensed physician or advanced practice nurse or surgeon that describes the nature thereof;

(d) Justices, judges, and clerks of courts of record, clerks of municipal courts, county clerk and recorders, sheriffs, and ministers of the gospel;

(e) Practicing physicians, officers and assistants of hospitals, prisons, and jails whose services are declared by the governor to be necessary for the general health, welfare, or protection of the community;

(f) Persons determined to be mentally incompetent by a court of competent jurisdiction and persons convicted of a felony and not pardoned;

(g) All persons who because of religious beliefs claim exemption from military service, if the conscientious holding of such belief by such persons is established under such regulations as the governor prescribes. Such persons shall be exempted from military service in a combat capacity, but no person so exempted shall be exempt from military service in any capacity which the governor declares to be noncombatant.