The profanity is one of the characteristics that reinforces the reality of the events depicted. If your buddy dies at your feet, you\'re not going to say "oh darn." The sense of reality is what makes this film great, and separates it from all the gung ho war movies of the 40s and 50s. Editing or bleeping the profanity would totally undermine the impact of the film.
I feel that shielding kids from profanity in a teen sex comedy is probably a good idea, but shielding them from the same words in this film is ridiculous. Context is everything.