《礼记·燕义》
如有战事发生，就发给他们兵车和盔甲，编成队伍，设立各级军官，按照军法进行管理。因为他们直属于太子，所以就不再接受司马的征调。
若有甲兵之事，则授之以车甲，合其卒伍，置其有司，以军法治之，司马弗正。
When there were wars, they would provide the troops with military chariots and armor, organize them into teams, appoint officers at all levels, and manage them in accordance with military law. Since they were under the direct control of the太子, they were no longer subject to the conscription of the司马.