If the side with black powder muskets stands close enough to the side with the nuke, they'll win. The Nuke side can't use their weapon without blowing themselves up, and they can't get close enough to the musket men to engage in hand-to-hand as they'll be shot long before they reach them. Realising this, and hating the musket men so much, I guess the nukers will just nuke them and take the buggers down with themselves.
Game over. No one wins.
Game over. No one wins.