I must say I'm a little surprised this movie did not scoring higher with the IMDb readers. I really expected it to be marked higher. While the movie is a comedy I would not say it is hysterically funny, so perhaps that is why the score is not higher. Maybe people felt it should have been funnier. I don't know.
Regardless, this movie is very well done and funny. Not funny as in a bust your gut kind of way - but funny enough to make you smile and laugh most of the time. It has a few serious moments that tie it into the reality of war and living in the armed forced. Although it is period sensitive the writers did well to make it applicable even years later.
The acting is excellent, and Walken is brilliant as the complex Sgt. in charge of the young troops. I'm not sure Walken was ever better in a role, he is just pure genius.
The rest of the cast is wonderful as well, from top to bottom you end up liking the cast more and more as the movie unfolds. And in the end it is impossible to say anyone was miscast or uncomfortable.
I would say if you have not seen this movie, you should because it is a classic.