Short version: A warrior ran in the right direction.
Long version: Two raccoons were butting up against my north gate, *bonk* wanna get in, *bonk* wanna get in. The human caravan arrives near the north gate, frightening the raccoons away. Pretty much simultaneously, some goblin ambushes spawn--one is near the west gate, and they run inside & immediately dogpile into my cage traps, except for one Macegoblin, who sits down & starts reading "Opening Cage Traps for Dummies." A Human pikeman chases the raccoons around the map until they reach the west gate. "Yay," think the raccoons, "Thread! Gems! Socks!" until they, too, get sucked into the traps. The Pikeman chases them in, and finds himself face-to-face with the macegoblin. The goblin is no match for him and he inflicts grievous non-lethal wounds. Just then, another ambush party appears in the same hallway, forcing the Pikeman to fight off odds of 5 to 1. He dodges, he rolls, he jumps out of the way, always in the right direction: Away from the goblins, toward his friends at the trade depot, and most importantly, through more cage traps. In the end, he took several cuts to his limbs, and though he lost a motor nerve in his left arm and several nerves in his right foot, he successfully baited the goblins right through the traps, instead of doing what a dorf would do: Berserk attack until slain.
And dammit, I can't make a slab to commemmorate this event, because he's not a citizen, he didn't die, and he didn't kill anyone.