Every member of the active militia shall be exempt from road tax and head tax of every description, from jury duty (including service on coroners’ juries) except that members of the National Guard who are not on active duty shall not be exempt from jury duty in any noncriminal proceeding, and from service on any posse comitatus, if the member furnishes the certificate of his or her immediate commanding officer that the member has performed the duties required of him or her for the year immediately preceding a summons to act as juror or during the period of the member’s service if less than one year.