After two years of training, I decided my axedwarf squad was ready to try battling an accursed dust husk. Not the whole accursed horde, mind you, just the one husk bunnny standing between the human caravan and the door. I opened the door and my three iron-clad axedwarves charged at the non-living, non-dead doe rabbit child accursed dust thing. They chopped and hacked as the humans came in and unloaded their goods (let's hope they remember the heroism of the dwarves).
As it appeared that the husk would not go down quickly, one of the axedwarves (Iden) got distracted with a dwarf child husk and gave it chase, all the way out of the fort into the broad daylight in view of the other meandering husks. Well, we couldn't close the gate now! But still the bunny fought on.
Iden battled the dwarf child husk for many long days and weeks. He was wounded in the leg, hungry, tired, thirsty, miserable, unable to retreat, but by some unimaginable luck he prevailed and beheaded the creature who was once one of our own. But, exhausted, he would not come back to the fort.
Relentlessly the bunny husk battled the other two axedwarves. The battle spilled into the fort, raging into our vast underground tree farm. Lest the situation get any worse, we sealed the door, locking Iden out to his doom.
Days passed. The humans wanted to leave, and nothing was stopping the bunny. So I ordered the emergency door thrown open. Iden was rescued and brought to the hospital; fortunately, no other husks pursued his rescuer through the open door.
Our two axedwarves were getting tired, but could not strike the killing blow. The bunny was indefatigable. I ordered the forging of new arms and armor, and outfitted a second squad of three swordsdwarves to relieve the axe squad. The battle raged.
Iden recuperated at the hospital, picked up his arms, and chased the fight with renewed vigor. Our three multi-colored recruits turned blue as they became recognized as swordsdwarves. More equipment was forged, and two new squads (one of axes, one of swords) were organized. The dwarven caravan came and went.
Winter has closed in around us. Twelve warriors have gone from novices to competent and professional veterans, and yet they continue to bring ceaseless battle to a single bunny husk. Limbless, brainless, toothless, gutsless, the creature attacks any way it can (usually by "pushing").
OOC: Seriously these events took 2 hours or more in real-life time, and I had to stop for sleep. I'm really not sure what to do at this point. I'm starting to worry that the bunny simply cannot be killed... maybe it's too small for bisection, or the game doesn't recognize it as having a neck for decapitation. Certainly the dwarf child husk (which must have been bigger and stronger) went down much more easily and quickly. The fight has roamed all over our tree farm (which is huge) and hasn't spilled into the fortress proper. My current plan is to let them fight until all the soldiers are legendary, and then if the beast is still alive, try to wall it off somehow and get the soldiers out. I assume cage traps won't work because it's a former domesticated animal from a migrant, but maybe if I catch a giant cave spider during the next few seasons...