Act of Military Service System Article 8

Standing Non Commissioned Officer Service is classified into the following:1- Active Service:Refering to a service for those male with qualified age and currently in service or Enlisted Soldier of Backup Service, with a qualified records after taking a voluntary test, or after receiving the required Non Commission Officer's Basic Education;Or depends on the Military needs, an outstanding Reserved Non Commission Officer who would like to be transferred voluntarily after serving a certain period of Active Service.2- Backup Service:Refering to a service for those have been suspended from Active Service, Retired, Lifted from mobilization, until exempted, prohibited, losing the citizenship of the Republic of China, or discharged.
中文原文 兵役法第8條
常備士官役之區分如下:
一、現役:以適齡男子及現役或後備役之士兵,依志願考選,受規定之常備士官基礎教育,期滿成績合格者服之,或以服役成績優良之現役士兵,依規定甄選合格者服之;或視軍事需要,以服現役滿一定期間之績優預備士官,志願轉服之。
二、後備役:以現役經停役、退伍、解除召集者服之,至免役、禁役、喪失我國國籍、除役時止。

English translation for reference only; the Chinese text prevails. Not legal advice.