When questioned, the sergeant produced an order that he had received from the officer of the day.
当被询问时，中士出示了他从当天的军官那里收到的命令。
英语百科
Officer of the day
The officer of the day (OOD), at smaller military installations where no provost marshal has been assigned, is a detail rotated each day among the unit/post's commissioned officers to oversee security, guard, and law enforcement considerations. Even if the officer has never served as an MP or is not qualified to serve as a provost marshal, officer qualification includes basic familiarity with this position.