Enlisted prisoners sabotaged the work. Yes, I have seen it.

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

You can hear this line at 00:37:18.746 in the Blu-ray version of the movie.

Quote context

[...]

- For a brief moment, between escape and death they were soldiers again.

- But it is insane to try and escape. Two soldiers shot, the third drowned. To what end? It was an escape from reality.

- There is your reality. This shows the position work should have reached by noon today. And this shows the position of actual progress.

- Because of your colonel's stubbornness, we are far behind schedule.

- That is not all.

- Enlisted prisoners sabotaged the work. Yes, I have seen it.

- I could have them all shot.

- Then who would build your bridge?

- Besides, are you sure it's sabotage? Perhaps the men don't work well without their own officers to direct them.

- My officers will direct them. Your officers will work beside them.

- That's for Colonel Nicholson to decide. As he pointed out, it's against the rules.

[...]