It all started, following the FUN model, with a strange occurance. The first caravan had arrived, and I was excited as the announcement came on. In the next frame, the merchant went berserk. I laughed and managed the fortress while trying to come up with a way to loot the horse without becoming enemies with the civ. Strangely enough, a short time later, the horse went berserk as well. The merchant had already killed himself by attacking wild mountain goats, but the closest this horse ever came to being killed was lying down and standing up. Impatient, I sent my ONLY military dwarf, Kivish Likotelis to take care of it. Kivish, who had trained up to skilled in fighter, shield user and sword user by this time, and novice or so in other skills like dodging and armor user. Nonetheless, he quickly dispatched the horse.
What I did not know was that the horse was also part of the parent civ. Oh well.
The military dwarf became an enemy of the fortress while being the only military force available. I was bored to death of this fort so I decided to have this man wipe out the fortress for me. Since he was effectively blocked from fortress supplies due to job cancellation, I worked out a way to funnel food and supplies to him. Unfortunately, because I had a couple dogs, there were some complications that were quickly solved by Kivish's pure badassery. The three war dogs jumped on him, who, at the time had only his clothes and a wooden shield. He bashed each of them in the head, jamming the GODDAMN skull through the brain. The fort's fate was sealed.
I assigned him to burrows located in a corner of the map while another corner was being filled with the armor, weapons and supplies from the caravan. Afterwards, I removed the burrow and he instantly took the items. Now for the slaughter.
Sixteen Dwarves left
I stationed him on the fortress entrance, where he chased down his wife then brutally beat her with his fists, pommel and shield. Guess his blade wasn't good enough. he became unhappy that his wife had died and he had to endure the decay of a friend. On the bright side, he took joy in slaughter.
Fifteen Dwarves left
In order to consolidate the survivors for quick killing, I cancelled all jobs and put a meeting area at the bottom of my main staircase, as well as a burrow named "Gulag." Most of the people were able to escape Kivish's wrath at first while he chased down single opponents, but were soon cornered in the bowels of the fort.
13 Dwarves left
The expedition leader tantrumed. He killed a farmer then calmed down. Unfortunately, he calmed down just in time to see Kivish with eyes unclouded.
11 Dwarves left
By now there were some dwarves who were badly injured but could crawl. They all were resting at the hospital. You can guess what happens.
6 Dwarves left
Kivish wandered the quickly emptying halls back to the Gulag, where his daughter huddled in a corner. Needless to say, he was unhappy about her death.
5 Dwarves left
I decided to give the fortress a fighting chance and organized the remaining people into a squad and sent them at Kivish.
1 Dwarf Left
In the end, Kivish randomly tantrumed and ceased in his isolation. Checking legends, he had 15 notable kills and 3 other kills (the dogs). Because history has not progressed much, all is known is that he fled into the the Twisted Carapace.