Firstly, I apologise for bringing up politics, but the penny dropped towards the end of the sci-fi epic "Avatar" that the final war between the Na'vi and the humans is very similar to the armed-to-the-teeth US army and the technologically deprived Vietcong.
I found that the moral of that final battle was essentially "don't get cocky in your enemy's back yard" where the cases of the indigenous inhabitants of the war zones were skilled in utilising their environment to their maximum potential, and both convincingly prevailed in their struggle against man-made explosives and missiles.
