[Rooster, LaBoeuf and Mattie are taking the bodies back to McAlester's]
Rooster Cogburn: [to LaBoeuf] What outfit were you with during the war?
LaBoeuf: Shreveport, with Kirby Smith.
Rooster Cogburn: Oh, I mean what side were you on?
LaBoeuf: I served with General Kirby Smith.
[Rooster starts to laugh]
LaBoeuf: And I don't have to hang my head when I say it either. Go ahead and make another joke about it. You want to make me look foolish in the girl's eyes anyway.
Rooster Cogburn: You don't need me for that.
LaBoeuf: I don't like the way you make conversation.
Rooster Cogburn: And I don't like your conversation about Captain Quantrill?
LaBoeuf: *Captain*? Captain of what? Bunch of thieves?
Rooster Cogburn: Young fella, if you're looking for trouble, I'll accommodate you. Otherwise, leave it alone.