The Enforcement Act of Act of Military Service System Article 15

Replacement Soldiers attended and passed the Military Training shall be issued with an appropriate certificate by the Ministry of National Defense.
中文原文 兵役法施行法第15條
補充兵於接受軍事訓練期滿成績合格者,由國防部發給證明書。

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