- Officer, sir, British officer! Here to blow up the bridge.
- Blow up the bridge?
- Yes, sir. British commando orders, sir.

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

You can hear this line at 02:35:20.529 in the Blu-ray version of the movie.

Quote context

[...]

- I was right. There is something going on.

(STEAM TRAIN APPROACHING)

- You've got to do it, boy. You've got to do it now!

- Have you a knife? I've just realised the bridge has been mined!

- Mined?

- Good boy!

- Officer, sir, British officer! Here to blow up the bridge.

- Blow up the bridge?

- Yes, sir. British commando orders, sir.

- Blow up the bridge?

- Yes. There's no time!

- No, no! Help!

- Kill him! Kill him!

- Let me go, sir! You don't understand, sir!

- Kill him! Kill him! (2)

[...]