So Petraeus got caught screwing with his dishonest hagiographer Paula Broadwell and had to resign. (My hunch is that there is much more behind this story but it will take a while until we learn about that.)
Petraeus was responsible for many horrible things done in Iraq, Afghanistan and elsewhere. On example is the liberation of Tarok Kolachie in Arghandab River Valley. Paula Broadwell described the destruction of such villages, and other Petraeus crimes. She was callous towards the victims and flattering to the perpetrators. Another Petraeus adulator and buffoon, Tom Ricks, published her. He also should, together Petraeus and Broadwell, go down in flames.
Before liberation

After liberation

Joshua Foust, no bleeding heart himself, wrote at that time:
I cannot comprehend why the deliberate destruction of villages seems to be an official, sanctioned ISAF policy in the South. Is is abhorrent, an atrocity, and there is no excuse for it (nor are there words for the anger it’s stirred in me, reading about it from afar; I suspect Broadwell would sniff at me to stop whining as well, were we to discuss it in person). This should outrage and infuriate everyone who reads about it. But, and this is where I move from rage to despair: how could we ever possibly hope to stop it?
Removing the perpetrators from their position is the only way to stop such atrocities. Petraeus' and Broadwell's fall is late but welcome justice.