Picture this devotion to a cause and compare it with the response from the NATO nations.
This is one of the great differences in this clash of civilizations. We have specialized: we depend on professional soldiers with technological advantages and a doctrine of force protection. They are an undisciplined rabble. I'd bet they don't even have a fire department in many of their towns.
However, if transportation could be arranged and leadership issued the call, I think that a lot of Americans and Europeans would step up to the challenge ala Teddy Roosevelt and the Rough Riders.
Not to overlook the anti American vermin on our college campuses. That is the part that really makes you wonder about the survival instinct being gone in some people.