It happened to me again 3 times last night --its not ALT-F4 its some kind of bug. As soon as the battle-map is loaded the other player drops and I get a win, together with a clan token and influence points. It happened to me twice in a row last night so I quit playing for the evening (its dishonorable to win without killing a single enemy soldier). I hope the poor guys aren't getting losses. Its unusual that it would give me a win for a drop, but so far this has happened to me 5 times total.