You're a spy, not a soldier.
5 seconds sound clip from the The Avengers (2012) movie soundboard.
You can hear this line at 01:34:35 in the Blu-ray version of the movie.
Quote context
[...]
- He's going to make his play soon, though. Today.
- I don't know. Whoever's left.
- Well, if I put an arrow through Loki's eye socket, I would sleep better, I suppose.
- You're a spy, not a soldier.
- Now you want to wade into a war. Why?
- I've been compromised. I got red in my ledger. I would like to wipe it out.
- No.
[...]