I don't actually play Strategus, although I clicked the link and can't undo it >_>
I will say: The thought of having one's character locked up
for any length of time would suck.... although trying to spring your
troops to replenish your ranks sounds lots of fun!
Of course, the enemy would need reason to lock up prisoners instead of just killing them. I don't know if you can recruit prisoners in Strategus like you can in Native.