On a campaign with the HRE the Italians made their final stand in Corsica. The only man to escape the battle was the Italian Doge himself who retreated to his fort. What annoyed me was that this one man meant that the fort would never fall without a direct assault. One man! You'd only have to wait and listen for the toilet to flush and then bang, you're in.

This is crazy. Is there a way to edit the game so that the strongholds fall without a minimum garrison?