
I have done nothing more
than my DUTY, my lady.
Game of Thrones Season 5, Episode 1

Dereliction of DUTY in the face of
the enemy is a court-martial offense.
The Big Bang Theory Season 2, Episode 16

My DUTY is to serve.
Game of Thrones Season 2, Episode 1

Go on, do your DUTY.
Game of Thrones Season 5, Episode 10

Was he the one on guard DUTY?
Game of Thrones Season 2, Episode 7