The philosophy of...

Hello,

I know my question is "crazy".... but I hope someone will help me.... Please help!

My question is that, -what is the philosophy of "Deer Hunter" (1978), I mean, -what is the real message "Deer Hunter" wants to convey to us?

I would love to know that because I've just listened to "Cavatina" -the music from the movie -so sad and so beautiful...

THANK YOU!