Have you ever played or heard of CTF? Obviously the answer to that is probably definitely yes.
I have been playing a lot of CTF lately and a lot of Dwarf fortress as well. What if these to games were mixed?
My idea was to set up a custom arena where my specially trained dwarfs can play capture the flag with a twist. My theory is that I would use siege operators as the defenders, and crazed hauling peasants as the attackers. At one end of the arena will be team one's base. This includes ballistas, ammo and the flag (a piece of furniture in a stockpile). At the other end of the arena will be team two's base. This will have a chunk of stone in their stockpile as a flag. Make sure both of these items are a similar weight. Team ones attackers will have stone hauling enabled, with everything else disabled. Similarly with team two's attackers have furniture hauling enabled.
When you are ready for the carnage, set all defenders to fire at will in their ballistas. Delete both stockpiles containing the flag and replace with the opposite. The haulers will rush out to get their 'flag' and try to bring it back to their base while ballista arrows are being fired all around them. Let hilarity and carnage ensue.
Take bets on the two competing teams and watch as they duke it out.
Discus.