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.
Regular Reserve (United Kingdom)
British Army – ""All male (but not female) soldiers who enlisted before 1 Apr 97 have a statutory liability for service in the Long Term Reserve until their 45th birthday. Men and women who enlisted on or after 1 Apr 97 serve for a total of 18 years or until age 55, in the Regular Reserve and Long Term Reserve combined from the date of completion of their full time Colour service. Long Term Reservists may only be recalled under Section 52 of the Reserve Forces Act (RFA) 1996, for home or overseas service, in case of imminent national danger or great emergency.""