I live near a military base, and there is a daycare, school, rec center, pub, ice rink, church, and grocery store, open to the public, and not managed by the military. All of it is on land owned by the military, but outside the wire.
The fact that these facilities exist on military land near a base (which a hostile government would surely argue IS the base) does not mean that the people in those buildings have it coming.
I mean, you kind of are saying it was justified, given the entirety of your focus is on justifying it. The blood is solely on the hands of the useless, dumbshit military that couldn't identify a school and avoid bombing it. And that's the charitable interpretation of their actions.