I don't know where this "they tried hitting war infrastructure" myth comes from.
Same with the bombing in Germany. They literally rebuild German city houses in the desert, to figure out the best way how to blow off the roof and set the wooden structures inside on fire.
They measured fire brigade response times to stage the bombing in a way to hit the rescue efforts.
It was about demoralizing the civil populace, so of course it was never about military targets.