If a person is willing to scale out so far in their understanding if history that they ignore the true nature of warfare on the ground, I'm pretty sure it must look all kinds of heroic.
That's what made some personalities' oratory so dangerous to society. Imagine the mentality of someone who was deadly serious about such beliefs. Should we accept their sincerity or condemn it?
"Armies for the preservation of peace do not exist; they exist only for the triumphant exertion of war."
-Adolf Hitler