Conscription in South Korea
Conscription in South Korea has existed since 1957 and requires male citizens between the ages of 18 and 28 to perform in the army compulsory military service. Women are not required to perform military service, but may voluntarily enlist.
Yi Seok
Yi Seok volunteered for the Korean military and served as an enlisted man in the Vietnam War as an infantryman in the Capital Division also known as the Tiger Division. The Tiger Division was an all-volunteer division in which all soldiers donated 80% of their pay back to the Republic of Korea to support the post-war economy.