The Enforcement Act of Act of Military Service System Article 25
The date of commence and the organization of General Mobilization shall be ordered by the President under law.
中文原文 兵役法施行法第25條
動員召集開始之時日及編成部隊，由總統依法頒布之動員命令定之。
English translation for reference only; the Chinese text prevails. Not legal advice.