For the last time, gentlemen, let me remind you, any prisoners found outside of barracks after lights out will be shot on sight.

8 seconds sound clip from the Stalag 17 movie soundboard.

You can hear this line at 00:17:02.713 in the Blu-ray version of the movie.

Quote context

[...]

- Nobody has ever escaped from Stalag 17. Not alive, anyway.

- Sergeant Hoffman of Barracks 4.

- Yes, Sergeant Hoffman.

- As duly elected compound chief, I protest the way these bodies are left lying in the mud.

- Anything else?

- Yes. According to the Geneva Convention, dead prisoners are to be given a decent burial.

- Of course. I'm aware of the Geneva Convention. They'll be given the burial they deserve.

- Or perhaps you would suggest we haul in 21 cannons from the eastern front and give them a 21 -gun salute?

- For the last time, gentlemen, let me remind you, any prisoners found outside of barracks after lights out will be shot on sight.

- Furthermore, the iron stove in Barrack 4, the one camouflaging the trap door, will be removed.

- And so that the men from this barrack do not suffer from the cold, they will keep warm by filling in the escape tunnel. Is that clear?

- All right, then, gentlemen, we are all friends again.

- And with Christmas coming on, I have a special treat for you. I'll have you all deloused for the holidays.

[...]