Section 16. No member of a corps of Volunteers shall be bound, without his consent, to serve or proceed on duty

16. No member of a corps of Volunteers shall be bound, without his consent, to serve or proceed on duty beyond the limits within which he shall have voluntarily engaged to serve or proceed on duty in accordance with the terms upon which the corps to which he belongs shall have been constituted; and in case no such limits shall have been fixed, he shall not be liable to serve or proceed on duty beyond four miles from the place at which he was enrolled. Rules.