It's suicidal, if you want to know.
3 seconds sound clip from the Waterloo (1970) movie soundboard.
You can hear this line at 00:53:23.540 in the Blu-ray version of the movie.
Quote context
[...]
- Some there could call me something more than Colonel, eh?
- Indeed.
- That must be the whole army.
- They're still positioning, Sire.
- Never interrupt your enemy when he's making a mistake. That's bad manners, eh?
- It's suicidal, if you want to know.
- It may surprise you to know that I saw this ground a year ago. And I've kept it in my pocket.
- Obviously, he's no student of Caesar. He's positioned himself badly. He has the trees at his back.
- We'll give him no provocation. Maybe he'll leave tonight.
- Come on, come on. You're nosing your way right into the pot. There you are!
- Look, keep quiet and I'll only eat half of you.
[...]