From one of my favorite movies of all time:
"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."
"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."
"Thirty years from now when you're sitting around your fireside, with your grandson on your knee, and he asks you, 'What did you do in the great World War Two?', you won't have to say, 'Well, I shovelled sh*t in Louisiana."
---all attributed to George C. Scott as Patton, in Patton