Conscription in South Korea
By law, when a Korean man turns 18 years old, he is enlisted for "first citizen service," meaning he is liable for military duty, but is not yet required to serve. When he turns 19 years old (or, in some instances, 20 years old), he is required to undergo a physical exam to determine whether he is suitable for military service. The table below shows the physical exam's possible grades and their outcomes, according to the Military Service Act. Men must enlist by the time they turn 28 (Korean age).
The length of compulsory military service in South Korea varies based on military branch. Active duty soldiers serve 21 months in the Army or Marine Corps, 23 months in the Navy, and 24 months in the Air Force. After conscripts finish their military service, they are automatically placed on the reserve roster and are obligated to attend a few days of annual military training for 6 years.
Selective Service System
The outbreak of the Korean War fostered the creation of the Universal Military Training and Service Act of 1951 (Selective Service Act of 1948). This lowered the draft age from 19 to , increased active-duty service time from 21 to 24 months, and set the statutory term of military service at a minimum of eight years. Students attending a college or training program full-time could request an exemption, which was extended as long as they were students. A Universal Military Training clause was inserted that would have made all men obligated to perform 12 months of military service and training if the Act was amended by later legislation. Despite successive attempts over the next several years, however, such legislation was never passed.