(1)Where any person who is a member of—
(a)any reserve of army officers,
(b)the Army Reserve, or
(c)the Territorial Army,
has entered into a written agreement to that effect, the Secretary of State may, at any time during the period specified in the agreement, by written notice call out that person for army service.
(2)Schedule 1 to this Act (additional provisions in relation to call out under special agreement) has effect for the purposes of this section.
(3)Where any person has been called out by such a notice as is mentioned in subsection (1) above, then at all times during the period beginning with the date and time specified in the notice and ending with the completion of his service by virtue of that notice—
(a)until Her Majesty no longer requires his services, or United Kingdom or elsewhere; and
(b)the [1955 c. 18.] Army Act 1955 shall (subject to paragraph 10 of Schedule 1) apply to him as if he were an officer holding a land forces commission, warrant officer, noncommissioned officer or soldier, as the case may be, of the regular forces, and not a member of the Territorial Army, the Army Reserve or a reserve of officers, as the case may be.
(4)The number of persons who for the time being are—
(a)liable to be called out by agreements made in pursuance of this section, shall not in aggregate exceed such number as may from time to time be provided by Parliament;
(b)called out as mentioned in paragraph (a), shall not be reckoned in the numbers for the time being authorised by Parliament for the regular forces.
(5)The Secretary of State shall from time to time report to Parliament with respect to the exercise of his powers to call out persons under this section, and any such report may be made, as the Secretary of State thinks fit, either with respect to any use made, or with respect to any use proposed to be made, of those powers.
An officer or soldier of the regular army may enter into such an agreement as is mentioned in section 14 above, and where he does so—
(a)the agreement shall not come into force until he becomes a member of a reserve of army officers or the Army Reserve or until such later date, if any, during his membership of that reserve as is provided by the agreement; and
(b)the power conferred by paragraph 1(2) of Schedule 1 to this Act to give notice of revocation of the agreement shall be exercisable both before and after the agreement comes into force ; and
(c)when the agreement comes into force it shall be deemed to have been made in pursuance of section 14.