Section 12

is, during the period of service, promoted to a rank above the rank of Lance‑Corporal in the Singapore Armed Forces or, where such service is in any of the other armed forces or in a force, body or organisation which is designated by the Minister for the purposes of national service, to such rank as may be regarded by the proper authority as equal to a rank above the rank of Lance‑Corporal in the Singapore Armed Forces;

holds, during the period of service in a force, body or organisation which is designated by the Minister for the purposes of national service and in which there is no classification of the members of the force, body or organisation into ranks similar to those in any of the armed forces, such position or has, during the period of service in such force, body or organisation, such status as may be regarded by the proper authority as equal to the position or status, as the case may be, of a national serviceman in the Singapore Armed Forces who holds a rank above the rank of Lance‑Corporal in the Singapore Armed Forces;

is, during the period of service, selected by the proper authority for officer training in the Singapore Armed Forces or, where such service is in any of the other armed forces or in a force, body or organisation which is designated by the Minister for the purposes of national service, is selected for training or a course intended to qualify him for such rank, position or status as may be regarded by the proper authority as equal to the rank, position or status, as the case may be, of an officer in the Singapore Armed Forces; or

having been so selected as referred to in paragraph (c), is currently undergoing such officer training or other training or attending the course,such person shall be liable to serve for a period not exceeding 2 years and 6 months.