Secondly, advances in military technology have changed the face of military campaigns completely. During World War II the U.S. had 12 million people serving in the military. That was about 10% of the U.S. population. That would be the equivalent of having about 31 million military personnel today -- at a time when having even 5 million would bankrupt this country.
Huh? It's the size of the war that dictates manpower need, not the technology, we will be facing a big war again someday.
It is not about advances in medical care, or technology, or bankrupting the country. Its about the all out determination to win at any cost, the unquestioned committment of the government at the top to win, and the total unity of the country to save it from totalitarianism. All of which are absent today.
Comparisons for these reasons are absolutely not pointless.