I think you need a screwball old horse cavalryman to command Third Army.
7 seconds sound clip from the Patton (1970) movie soundboard.
You can hear this line at 02:04:25 in the Blu-ray version of the movie.
Quote context
[...]
- I wanna use this road. The Saint-Lo-Pierres Road.
- We'll let Monty pin down the enemy forces at Caen.
- The Third Army will swing around here, a sweeping end run right across France.
- I think you need a screwball old horse cavalryman to command Third Army.
- Ike came to that conclusion in London three months ago.
- He what? Why, that dirty son of a...
- I'm sorry, I'm sorry. I promised to keep my mouth shut.
- What's this activity near Coutances?
[...]