Are you sure it's not the samurais killing units around the defender?
Okay, I came across a very irritating and bizarre bug while I was playing. I was just playing and early on, suddenly our elite hill warrior in the north as well as the elite mace that Sullla built just disappeared... They hadn't even been attacked yet (and there's no record of it in the combat log), but they were just gone. I halfway wondered if it was the invisible unit bug, but no, they're definitely gone, confirmed by enemy units walking on that space unimpeded. The round is called "Minefield" so my only guess is that random squares kill off units, but that seems like a totally bizarre feature... Any ideas, I guess we'll just roll with it and I'll finish this thing off, but just a heads-up. Any lurkers experience this? Anyways, I'll have the report up later tonight.