Yes, it was a stupid war... well... all wars are stupid but some are more justifiable than others and Vietnam doesn't have any justification... it was just a stupid confrontation between two political systems and with lots of money rolling in the background for both sides and lots of people suffering in between...
What a wasted time in all world...
At that time we were involved too in what we call Guerra Colonial (Colonial War) because our stubborn dictator didn't want to give freedom to our colonies in Africa... my father almost fought in that war, but he was saved by the coup of April 25 1974 that finally destroyed the dictatorship here in Portugal and gave the colonies their independence...