I've gotta say, I'm not crazy about sanitizing realistic war movies for a PG-13 rating, as Nolan has reportedly done. Would Saving Private Ryan have the same impact with less violent imagery?
One of humanities great moments happened after WW2, or maybe Vietnam: the realization that war is not noble, that "pro patria mori" is bullshit, and that no one really wins. Our media must reflect this fact, even if it seems to have lost touch with reality everywhere else. It's critical to the discourse and to our continued survival.