Clause 20

A person required to report under the provisions of section 19 of this Act shall be liable to render regular service for the period approved by the proper authority and under such terms and conditions as may be provided for from time to time in regulations made under any written law relating to the armed forces.

No person shall be liable to render regular service in excess of the period for which he has applied to serve.

The proper authority may at any time order the discharge of a person from regular service before the expiry of his period of service for any reason provided for in regulations made under any written law relating to the armed forces.