I have made a new fort recently, and at the time of this story unfolding, the fort is hardly 9 months old. I had some difficulty with an aquifer, despite it being a light aquifer, because the dwarves refused to build the walls fast enough due to constantly drinking and other things at very bad times, so I was quite behind on setting up defenses or military even more than usual for so early on. I had, however, acquired a fairly nice book, a tome called Mysteries of the Mountainhalls. It's a copy, with cheerful but amateurish prose, but on giant cave toad leather and encrusted with gems. It's not the stuff of legends to be sure, but it was, at the time, our only book and means of abstract thinking. It was also worth 2500 dwarf bucks, which we traded for fair and square.
As it would turn out, SOMEONE who shall remain nameless forgot to keep the library secretly restricted to only citizens, and a human scholar arrived shortly after we put it on the shelf in the new "Library of Crafting" (an uninspired name for an equally uninspired single bookshelf with a single book in the middle of the single stockpile). Fearing theft, we promptly had to set up a military to murder this "intruder" of course. We had nothing but woodcutting axes and mining picks, so we had to tell the miners and woodcutters to drop them on the ground, sanctifying them for military use, and then pick them up again to form a squad. I kid you not, the randomly generated name for this ragtag bunch of miners and tree-fellers with no military skills or discipline at all was... The Mountains of Respect!
By the time the Mountains of Respect caught up with him, the human had made his way into our meeting hall. Perhaps even though they were untrained, 10 of them all piling up around him with the doors locked on either side was overkill... he was unarmed and unarmored, but he was wearing some goblin bone and hair accessories, so, I'd seen crazier things in other worlds than dwarves being horribly mangled or take forever to kill supposedly weak beings before. It turned out to be overkill indeed though, as the Mountains of Respect immediately killed the human infiltrator with two swings, one pick tearing his guts, and one pick penetrating his skull. No injuries (at least not physical ones, as I am still seeing memories of this event in thoughts a year later) were incurred by any dwarves, and the blood, clothes, and corpse were quickly disposed of.
I looked in legends mode and swapping the save folder back (which I don't consider cheating, but to be great fun to see such intrigue, and one of the main points of playing for me). It turns out I was not over-reacting and killing a nice scholar who just wanted to write books in our fort. I knew right away since his blood didn't match his reported name. He was an agent, a murderer, a thief, had some prior military experience, and he had corrupted our legendary stonecrafter to his cause on his way through the halls (a short-lived arrangement to be sure). NO ONE messes with the Mountains of Respect!