The Saga of Col. Ulric Dahlgren's Leg-- Part 3:

Despite the amputation, Ulric Dahlgren later returned to action, promoted to the rank of colonel while convalescing, he left his sick bed to lead a daring but controversial and ill-fated 1864 attack on Richmond.

His stump had not yet hardened enough to attach a wooden leg, so Dahlgren rode with his right thigh lashed to the saddle and crutches attached to the side of his horse..

He was killed when Confederate troops ambushed his detachment.

And, what about his leg?

The foundry was torn down after World War II, but the leg was not found.  The plaque was moved to another building.

So, Leg, Leg, Who's Got the Leg.  --Old Secesh