When you put your hand into a bunch of goo that a moment before was your best friend's face, you'll know what to do.
14 seconds sound clip from the Patton (1970) movie soundboard.
You can hear this line at 00:04:16 in the Blu-ray version of the movie.
Quote context
[...]
- We're going to murder those lousy Hun bastards by the bushel.
- Now, some of you boys I know are wondering whether or not you'll chicken out under fire.
- Don't worry about it. I can assure you that you will all do your duty.
- The Nazis are the enemy. Wade into them. Spill their blood. Shoot them in the belly.
- Now, there's another thing I want you to remember.
- We are advancing constantly and we're not interested in holding onto anything except the enemy!
- We're going to hold onto him by the nose and we're going to kick him in the ass.
[...]