http://www.youtube.com/watch?v=sBksHaTQCbU

Kilgore: Smell that? You smell that?
Lance: What?
Kilgore: Napalm, son. Nothing else in the world smells like that.
[kneels]
Kilgore: I love the smell of napalm in the morning. You know, one time we had a hill bombed, for 12 hours. When it was all over, I walked up. We didn't find one of 'em, not one stinkin' dink body. The smell, you know that gasoline smell, the whole hill. Smelled like
[sniffing, pondering]
Kilgore: victory. Someday this war's gonna end...
[suddenly walks off]

-Apocalypse Now

"Dr. Strangelove"

President Muffley: "Gentlemen, you can't fight in here -- this is the War Room!"

http://www.youtube.com/watch?v=UAeqVGP-GPM&NR=1

Patton. The whole opening monologue, really, but the line that has always stuck with me is: "Now I want you to remember that no bastard ever won a war by dying for his country. He won it by making the other poor dumb bastard die for his country."

http://www.youtube.com/watch?v=Kh9S1Hk975U&feature=related

(Strange that the video is a mirror image. Bothered me the whole time I was watching it, but couldn't find it any other way.)

Gettysburg (1993)
Pickett's rationale for the southern state's right to secede.

Major General George E. Pickett: I think that my idea, my, uh... my analogy of a gentlemen's club is-is fair enough. It's clear enough.
[he turns to Freemantle]
Major General George E. Pickett: Colonel, think on it, now. Now you suppose that we all join a club, a gentlemen's club. And then, well, after a time, several of the members began to, uh... began to *intrude* themselves into our private lives, our home lives. Began tellin' us what we could do, what we couldn't do. Well, then, wouldn't any one of us have the right to resign? I mean, just...
Major General George E. Pickett: ... resign. Well, that's what we did. That's what *I* did, and now these people are tellin' us that we don't have that right to resign.
James L. Kemper: Well...
James L. Kemper: I gotta hand it to you, George. You certainly do have a talent for trivializin' the momentous and complicatin' the obvious. You ever considered runnin' for Congress?

(6:44 for the dialogue)

http://www.youtube.com/watch?v=FbMAC4ZRkCU

Pvt. Pyle: Seven-six-two millimeter. Full metal jacket.

http://www.imdb.com/title/tt0093058/quotes

It may not be the best, but it seems to be pretty memorable to most.

Battleground is a classic for me, but there are so many.

http://www.youtube.com/watch?v=XrnB1OMhETI

Kelly's Heroes is probably its own topic. Too many quotes to list here. Pick one...but be righteous. No bad vibes.

The Thin Red Line (1998)

Private Witt: Do you ever feel lonely?
First Sgt. Edward Welsh: Only around people.