[1] When the Military Service Act was enacted in place of the Conscription ordinance, it was written as hoju hei-eki (replenishment territorial army and naval volunteer reserve.
補充兵役分左列二種： 一、現役：凡適合常備兵役之超額男子，視國防需要，每年徵集一部入營，由常備師或管區施以四個月至六個月之訓練，期滿退伍。 二、預備役：以補充兵現役期滿退伍者充之，至屆滿四十五歲止除役。 Replacement military service is divided into two categories as shown on the left:: 1.Active Service: Each year, one male soldier who is eligible for standing military service shall be recruited for enlistment, and shall be discharged from the army after four to six months of training by the standing division or district.
補充兵在戰時依戰事需要，得依年次召集，參加作戰，並得臨時施以加強教育。 Replacement soldiers shall be convened annually as necessary for wartime, participate in operations, and temporarily provide strengthen education.
In 1973, Supplementary service requiring specific qualifications was established.
In the late 1960s and early 1970s, supplementary services in South Korea began to operate in the form of alternative services that required military training.