Conscription in South Korea
The basis for military conscription in South Korea is the Constitution of the Republic of Korea, which was promulgated on July 17, 1948. The constitution states in Article 39, "All citizens shall have the duty of national defense under the conditions as prescribed by Act." The Military Service Act of 1949, which was implemented in 1957, specified that compulsory military service is required for men ages 19 or older. Conscription is managed by the Military Manpower Administration, which was created in 1948.
Singapore Armed Forces
Under the Enlistment Act 1970, conscription is mandatory for all "persons subject to [the] act", defined as those who are not less than 16 years and 6 months of age and not more than 40 years of age, with some exemptions and with no specific bias to gender (not limited to males). In practice however, it is only compulsory for all fit and able-bodied Singaporean men who have reached 18 years of age, and are not deferred for certain reasons, to be conscripted in military service, or Full-time National Service (NSF).