Bone Dust

The bridge was made of skeletons. Each time one of the Necromancer's carts rolled across it, several of the skeletons were shattered to flinders and fell into the moat, where the rushing water carried the dust to the crypt level to be dried, molded, and built into one of the terrible living siege weapons for which the Necromancer was famed.

Twye stopped at the gate and asked one of them.

"The way I see it," the skeleton said, "It's not so bad. I'm gainfully employed. It's better than being just plain dead, right?"

A cart ran over its left wrist.