Some otter corpses got rezzed by an ambushing necromancer. I hastily assembled a military, ordered the civvies into the fort, then killed the otters, sent my squad inside and shut the door. One of my dwarves got stuck outside (the only one with a weapon, our hunter), but I viewed him as already dead. Another, inside my tiny cave (about the same size it was last post, with a slight extension) somehow went missing. Then, only a few squares away from the butcher's, the harbinger knocked.
"The Yak Bull corpse shudders and begins to move!"
I'd sealed myself inside with the necromancer. I draft everyone into the military and move to a good defensible location, the little half-dug nook. Waiting there was my missing dwarf. My undead missing dwarf. She had high strength and agility, the best we had, but she was very quick to tire, making her a less-than optimal squaddie - in life, she was reduced to a glorified hauler. In death, she was terrifying. Corned by the bull and her, we succumbed. The one locked outside could have potentially hung on til migrants, but she jumped in the river in despair (I honestly had nothing to do with it)
Well, just goes to show what happens if you don't play fort mode regularly. That was sloppy play, on my part, which is why i killed my last dwarf and didn't include images. I'm gonna go try on a regular savage/evil or savage/neutral fort to brush up on my DF skillls. For some reason, good's never quite appealed to me, although slaughtering unicorns is very me-ish.