I'm playing on hard, I usually leave a cannon or some sort of seige weapon in there so I can get back in fast. I don't just have Militira, besides they just turn into Militia, I leave my injured stacks, say if I had 50 Dismounted Feudal Knights I would leave them, behind, if I had 79 Broken Lances then I would leave them behind, and I would retrain the ones I could before the rebels completely take over. As far as I have seen, unrest is a great way for me to pillage from me...
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