At what point did civilians being targeted in war become unacceptable?

But Augustine could only write books and preach sermons, not enforce these ideas. The first time in history that not harming civilians was actually ordered and put into practice by commanders in chief using their executive authority was by Muhammad and Abu Bakr.

Aquinas studied works by Muslim philosophers and legal theorists like Averroës… I’m just sayin.

In medieval times when a army was besieging a castle or a small village, I imagine it was a more democratic process on whether or not to to fight or surrender, then it is today. Most people have no say at all in wars there country’s partake in. For example over 90% of Americans opposed Americas war in Libya but obama went ahead and did it anyway.

Maybe, maybe not.

I suspect that in medieval times decisions like this were mostly made by a fairly small group at the top of the pecking order, and everyone else went along with them because it never occurred to them that they ought to be consulted, or to have a say.

Conversely, while a democratically-elected leader may make an unpopular decison, the people have given him legal authority and a democratic mandate to make that decision, and the financial and material tools with which to implement it, and there are various avenues open to them and to their other representatives if they disapprove of the decision. I have no doubt that somebody directly affected by the decision, and acutely aggreived by it, will have no difficultly in working this up into a “they are all responsible!” attitude.