There are so many questions that need to be answered. LBJ screwed up royally (he sent our boys over with no clear mission and did not understand insurgency military tactics)and Nixon eventually had to capitulate.
The US Media and Government let our boys down as far as ‘Nam is concerned and I would like the truth to come out some day. We are facing similar dilemmas in Iraq and Afghanistan. They tell you to go fight, limit your rules of engagement, and then abandon the territory that si many of us or our family members (I included)gave up their lives for.