When attacking a larger fort, the bounty on my head accumulates very, very quickly. And this happens fast enough that I usually get some mercenaries arriving right at the height of the battle.
On lower levels this wasn't that much of an issue, I did usually manage to kill the mercenaries as well. But I'm stuck a bit at a particular fort right now because the combined soldiers and mercenaries are a bit much for me.
How can I avoid having to fight multiple mercenaries at the same time as my actual targets when attacking a large fort?