- A corporal should always know exactly how many men he has under him at all times.
- Oh, yes, sir.

6 seconds sound clip from the The Bridge on the River Kwai movie soundboard.

You can hear this line at 01:06:17.654 in the Blu-ray version of the movie.

Quote context

[...]

- As part of this amnesty it will not be necessary for officers to do manual labour.

- He's done it!

- Somebody deserves a medal, sir.

- How many men in your party, corporal?

- Well, I don't really know, sir.

- You don't know?

- Well, sir, 12, usually but...

- Well, one of the men took sick very suddenly this morning, sir, and, well, it took 3 or maybe 4 of the others to help him to hospital, sir. And, uh. Oh, he was took terrible sick, sir.

- A corporal should always know exactly how many men he has under him at all times.

- Oh, yes, sir.

- Have you a nervous affliction? If not, stop making those faces at once.

- It may be funny and I'm sure it's done with the best motives but it's not military behaviour.

- No, sir.

- We must put a stop to these demonstrations.

- Yes, sir.

- Have you ever constructed a bridge across a stream like the Kwai?

- Yes, sir, half a dozen of them in Madras, Bengal.

[...]