63.—(1) (a) This subsection applies to a man of the Permanent Defence Force who is enlisted under section 53.

(b) The Minister may by regulations vary the conditions of service of a man to whom this subsection applies so as to permit him, with the consent of the Minister:—

(i) to enter the Reserve Defence Force at any time for the residue unexpired of the term of his original enlistment, or

(ii) to extend his service in the Permanent Defence Force for all or any part of the residue unexpired of the term of his original enlistment.

(c) A man to whom this subsection applies, with the consent of the Minister, may, if the term of his original enlistment is less than twelve years, extend, in accordance with regulations made by the Minister, the term of his original enlistment up to a period of twelve years or any shorter period.

(d) Where a man to whom this subsection applies extends the term of his original enlistment under this subsection, any subsequent reference in this Act to the term of his original enlistment shall be construed as a reference to the term of his original enlistment as so extended.

(2) (a) This subsection applies to a reservist who, having been enlisted in the Permanent Defence Force under section 53, has been transferred to the Reserve Defence Force under section 70.

(b) A reservist to whom this subsection applies, with the consent of the Minister, may, if the term of his original enlistment is less than twelve years, extend, in accordance with regulations made by the Minister, the term of his original enlistment up to a period of twelve years or any shorter period.

(c) Where a reservist to whom this subsection applies extends the term of his original enlistment under this subsection, any subsequent reference (including the reference in subsection (3) of this section) in this Act to the term of his original enlistment shall be construed as a reference to the term of his original enlistment as so extended.

(3) (a) This subsection applies to a reservist who, having been enlisted in the Permanent Defence Force under section 53, has been transferred to the Reserve Defence Force under section 70.

(b) The Minister may by regulations vary the conditions of service of a reservist to whom this subsection applies so as to permit him, with the consent of the prescribed military authority, to re-enter the Permanent Defence Force for all or any of the residue unexpired of the term of his original enlistment.

(4) Regulations under paragraph (b) of subsection (1) or under subsection (3) of this section may be expressed to be applicable generally or in specified cases only.