Never underestimate the power of propaganda to flip the public, we saw that in 1916.
The Vietnam War ended the delusional love affair most Americans had with the military.
I'd also point out that modern western countries today might have the most risk-averse populations in the history of the human race. Look around in public today at all the retardates walking around with diapers on their faces, and ask yourself if anyone within five branches of them on a family tree would even risk walking outside after dark, let alone allowing themselves to be shipped off to boot camp.