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.
Comparative military ranks of Korea
Both North Korea and South Korea share the same enlisted rank structure among all of their military branches. They also have enlisted ranks called "Corporal" and "Sergeant" in English, but they are not considered non-commissioned officer ranks, though they are treated as one if they hold an NCO position.