《明史·志·卷五十二》
有大的征伐，便挂上各种将军或大将军、前将军、副将军印信统领军队出征，战事结束，便归还。
有大征讨，则挂诸号将军或大将军、前将军、副将军印总兵出，既事，纳之。
In the event of a major battle, different titles such as general, supreme general, vanguard general, and deputy general were given to denote different leadership roles, which were resumed after the battle.