an officer (in the armed forces, police, etc) on duty at a particular time
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
How to use duty officer in a sentence
Another on-duty officer was in the vehicle at the time of the incident.Drama For Kate As Shot Is Fired By Police Guarding Her | Tom Sykes | November 2, 2012 | THE DAILY BEAST
And the duty officer said, "President Carter is no longer president, and you cannot access that information."
I added these to the message and forwarded the request to the Patrol duty officer for his action.Indirection | Everett B. Cole
Jason followed her to the bridge where she relieved the duty officer and began taking readings for the jump-setting.Deathworld | Harry Harrison
Now I am told to take over the task of the duty officer who is going on a raid.'Green Balls' | Paul Bewsher