Decided to be "nice" this time around and gave the elves some lead coins for some clay - Virtually worthless, of course, for equally worthless material. I also purchased a wolf and a wombat, plus thier drink, using bone and horn goods, and then offered them some wood.
I think that might make the point clear to them. If that doesn't the future raid will.
EDIT: Another werehorse. Here goes nothing!
SILVER DOORS, I CHOOSE YOU!
EDIT II: Once the militia stormed out through the back door, the civilians turned and tried to fight, save one dude who was being ripped to pieces because out of everyone he was the one idiot who wasn't running away from the werehorse, but towards it before the militia came out to fight - by some miracle, he survived, and is now functionally dead to us, being walled into the hospital because unlike the other casualty, he couldn't do us a fucking favor and die of blood loss after his skin was torn by a bite. So he'll inevitably turn once the next month rolls around and forever after.
I've listed both as "Civil Hero" as neither one was expected to try and stand and fight, but did so anyway and are now dead to the fortress (or at least functionally so in one case.) I'm a bit at a loss, because after his turning, he'll be fully functional again, but I can't let him continue about the fortress without him murdering half the population the following month.
I suppose all I can really do is have a squad on standby right outside the door next month; the iron armor they have did its job and deflected the bites from the progenitor horse.
EDIT III: And a siege comes! Kinda. Based on the force composition they seem more like a small group of brigands, though
supposedly they're goblin nation troops. Hell, might just be a gaggle of bumblefucks who just happen to be from there.
And it gets better! Some of the fighters have instruments. They brought fucking battlefield musicians.
EDIT IV: As expected, this half armed rabble of musicians and pickpockets didn't stand a fuck of a chance. Only one fighter survived, and that was because of his conspicuously staying veeeery far behind everyone else. Almost like he expected them all to get slaughtered. Only casualty was a baby, the loss not to enemy weapons, but a goblin who dove to the rescue of a human (and got his leg cut in half down the middle for it) and knocked the mother into a pond, whereupon the child drowned, being left behind by the mother who had a goblin to violently stab to death with her bardiche.
I'll have to wait until winter to recover the bodies of the child and a fisherdwarf who died this spring, and the guy who died in the werehorse attack still needs to be buried. Most Fun I've had in a while, even if two deaths were accidental.