Explain the entertainment that goes on at the Citadel.

The Citadel is a big old museum with a rotunda that now houses a kind of gymnasium where fights between men take place. Twelve men start in the arena, and they fight among themselves until only one is standing. At any time a man can head for the door and take the defeat without punishment. One Southern boy that Sarat knew from Camp Patience, Taylor, refuses to surrender and is beaten to death.