My good man,do you understand that I said in 3 or 4 posts "the US was not militarily defeated"? In plain english,It wasn't USA that was defeated,it was the Republic of South Vietnam. USA left the war because of politics. The ones who kept fighting and eventually lost,were the incompetent leaders of South Vietnam. And unfortunately,many brave units of the ARVN were affected by the majority of corrupt and incompetent officers and politicians of their country. They had some epic units in the ARVN,but overall,by 1972-1974...the majority of the army was corrupted or with low morale.