officer of the day

an officer who has charge of the guard and prisoners on an assigned day at a military installation. Abbreviation: OD, O.D., O.O.D.

Origin of officer of the day

First recorded in 1835–45

There, a dozen yards away, but trudging fast as dignity would permit, came the officer-of-the-day.

Lanier of the Cavalry |Charles King
Officer-of-the-day reported half an hour ago every set was in use.

Found in the Philippines |Charles King
He was playing with the tassel at the end of the red sash which the officer-of-the-day wears about his waist.

The Seven-Branched Candlestick |Gilbert W. (Gilbert Wolf) Gabriel
I heard in the nick of time of the order to the officer-of-the-day to inspect for Lieutenant Lanier.

Lanier of the Cavalry |Charles King

He was officer-of-the-day, today, and could not leave the premises.

The Seven-Branched Candlestick |Gilbert W. (Gilbert Wolf) Gabriel

officer of the day

a military officer whose duty is to take charge of the security of the unit or camp for a day Also called: orderly officer