Edit: I will go a bit further..
I consider Military the greatest power on Earth. It's sacred, necessary. But those who abuse its power commit, in my view, the greatest of sins. I don't mean the soldiers who fight, but those making the decisions of who they fight. The soldiers do their job, often willingly. And they are the ones who face the consequences. To betray them by corruption is the ultimate betrayal. War is a power that, I think, should be reserved for situations with no other option. Mercenaries not considered.
Pogroms; slavery; totalitarian dictatorship; theocracy; intentional mass starvation; mass organ harvesting; mass forced relocation; anarchy; failing to respond to unprovoked violence; restricting freedom instead of defeating the adversary.
You really think the massive amounts of death and destruction aren’t top ten? What do you think happens to the local population when an invading force arrives? You should go and read about the rape of Nanking. And just read about what happened in wars before the modern era.