I remember reading "Die gruenen Teufel" when I was younger. Pretty shocking - torture, blood and guts 24/7.There's a pretty good doc out there about the GreenBerets and vietnam.The US had their special forces infiltrate the territory years before NAM started to gather intelligence about enviroment, enemies, possible local allies(Green Beret speciality), etc.According to the special forces gathered info which befriended the local mountain folks - a war there was not deemed successful.This fact didn't stop the US from pumping baby-soldiers into the later conflict for years on end.