Unless it obviously is not. Otherwise it's just a restatement of "I was just following orders".
The ATO doesn’t provide a lot of details. And from the air, many things look like something else. So unless there are comments added like “Religious shrine”, then you assume the target has been vetted and is valid.
Law of war includes things like proportional means, collateral damage, etc - and it isn’t to the pilot to decide how those balance out. If you don’t trust your superiors, you resign.