I remember reading about a siege in the 100 years war that proves "civil war" is not an oxymoron. An English general was besieging a French castle. He managed to dig some kind of trench around the castle that was about to cause it to collapse or something, so rather than utterly crushing his enemies he properly warned the French general what he was doing. The French general didn't believe him, so the English bloke invited him outside to show him. The French dude was like, "Hmm... looks like you're right. OK, we surrender." Then the two armies had a pleasant banquet together.