Originally Posted by
daelin4
In playing as Empire:
You get money.
The enemy army doesn't get back the prisoners, at least according to the new campaign I played to test this; the army retreats and their numbers look the same as in the panel where you choose to pardon/ execute/ take on captives.
When an army is defeated a second time it is killed off, regardless of what choices you make with the captives.
I am like 95% sure that in MTW2 (some) soldiers are returned to the defeated army, but only if you chose to ransom; I would have to test that out to make sure. But like in all TW games, defeating a second time kills off the army regardless of the choice.
You might be asking what's the logic behind it: well the logic is completely game-based: the captives feature allow for three bonuses to your army as a result of winning, and it is all about choosing one of said three bonuses.
EDIT: I think it doesn't return troops in MTW2 either; I just defeated a Polish army in my HRE campaign, and the army's numbers remained the same when I chose to release them. It is possible that the captives may count as Wounded, and like all wounded troops have a chance to die and just so happened that none of them are proc'ed to survive.