The thing about imagination & war has, obviously, been with poetry from the beginning. The nobility & vanity of the Homeric heroes. Rilke's poem about the dead cavalryman's beautiful shako.
We want history to conform to a child's dream of heroism. The youthful perception of beauty incorporates all kinds of disparate elements. The focus in the Gospels on the power of childish (imaginative) vision. "They behold their Father's face."
Blake, of course, was into this...
A happy childhood forecasts the doom of the world.