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.
Korean People's Army Air and Anti-Air Force
The Korean People's Army Air and Anti-Air Force (KPAAF or KPAF; Chosŏn'gŭl: 조선인민군 항공 및 반항공군; "Chosŏn inmin'gun hangkong mit banhangkonggun"; Hanja: 朝鮮人民軍 航空 및 反航空軍) is the unified military aviation force of North Korea. It is the second largest branch of the Korean People's Army comprising an estimated 110,000 members. It possesses 940 aircraft of different types, mostly of old Soviet and Chinese origin. Its primary task is to defend North Korean airspace.