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.
Korea Army Officer Candidate School
Korea Army Officer Candidate School (KAOCS, Hangul: 육군 학사사관, Hanja: 陸軍 學士士官) provides training to become a commissioned officer in the Republic of Korea Army. Korea Army Officer Candidate School was first proposed on 28 June 1981. Between 1981 and 2014, over 48,273 candidates were enrolled in 59 KAOCS classes and were commissioned as Second Lieutenants.