WordNet
n. all that is normally required in some area of responsibility
Wikipedia
Line of Duty is a British police procedural television series created by Jed Mercurio that premiered on 26 June 2012. It is the most popular drama series broadcast on BBC Two in the multichannel era and is a winner of the Royal Television Society Award for Best Drama Series. The first series was BBC Two's best-performing drama series in 10 years, with a consolidated audience of 4.1 million viewers. The drama was recommissioned for a second series and the first episode was broadcast on 12 February 2014. The second series achieved widespread public and critical acclaim, and on 8 April 2014, the BBC commissioned two more series. In April 2014, Line of Duty was included in a list of the Top 50 BBC Two shows of all-time. In an interview on 28 April 2016, creator Jed Mercurio said that a fourth series would begin filming in the autumn and that "it will be delivered for 2017".
In the United States, the first series was aired on Hulu in August 2012 as an exclusive series.
Usage examples of "line of duty".
And below, in eight columns, are the names of 152 military and civilian cryptologists, intercept operators, and analysts who have given their lives in the line of duty.
But when a woman is so charming as she was, a young man is apt to find excuses for her, and I reflect that if a Spanish or an Italian lady has her Cavalier Servente or a French Marchioness has her very particular friend and nobody finds any fault with it, society need not be so very hard on the Countess, if she deviates slightly from the strict line of duty.
So she solved her problem by staying away from men altogether, except in line of duty as a waitress.
The actual attack did not work out according to plan except that it accelerated the brothers' path to the goal of all followers of Hasane Sabbah killed in the line of duty: Eternal Paradise.
The languid gentleman's voice had taken on a mild sharpness, a reminder to the Superintendent that he was not merely operating in the line of duty - if he stumbled and fell down on this job, there wouldn't be just an inquest.
It won't be the first time I've done something that stuck in my craw in the line of duty.