I am playing Copernicus Game 6271 and just were at battle where us (grecian states) were attacking the Aztecs. We had about equal forces in total. Their mobile units consisted of just one horseman. In one turn this one sole horseman attacked my 31 horseman and wiped them out all! This must have been a ueber horseman which at once can wipe out 31! There were some other occasions where their units albeit beeing in small quantities wiped out a huge amount of our forces. I have not seen this in previous battles so this might be a new bug since the latest update.