This was outside the Sid Meier series, but Civilization: Call to Power had a Slaver unit, a stealth unit which could capture enemy citizens from their city. ht

This was outside the Sid Meier series, but Civilization: Call to Power had a Slaver unit, a stealth unit which could capture enemy citizens from their city. https://en.wikipedia.org/wiki/Civilization:_Call_to_Power https://en.wikipedia.org/wiki/Civilization:_Call_to_Power Also, in Civilization 6, from what I've read, the Aztec "Eagle Warrior" unit has an ability to "turn defeated enemy units into Builders". I think the subtext is clearly that the defeated units are enslaved, though it's curious that they don't say so. I do suspect that they don't highlight the subject because players might find it unpleasant.