Well, there was no objective criteria in the OP so technically anything goes. I was just assuming that people didn't war, then stop, then 1 turn it. The reason being that absolutely anyone playing an AI with techs to be had will milk them unless it hurts diplo too badly. It's extremely likely if you play 10-20 games that you'll run such a war at least once, therefore giving a 1 turn war (possibly two for non-mounted troops). Not saying that's wrong per se' as criteria at all, just that it isn't meaningful. Of course, if we don't define a whole bunch of strict criteria then it won't be too meaningful anyway, so I guess the OP's criteria is the easiest . The only reason I worded it the way I did above was that such a war did not occur to me upon thinking of the intent of the OP, and I imagined I wasn't alone...although possibly I was.