There is a term for describing human resources or material assets unintentionally destroyed in battle space struggles of wartime. Collateral damage. As a euphemism it can be misleading. As a descriptor it is often wholly inadequate.
A bombardier in World War II may have been able to peer through the broken clouds and billowing smoke from leveled ruins below. But few, however, left the scene of fire and explosion in a position to see close-up the detail that portrays horror, pain, and loss.