https://www.youtube.com/watch?v=rTtSlQfSsQY&ab_channel=MMO-Champion
Derek Proudmoore
Koltira
https://us.forums.blizzard.com/en/wow/t/regarding-slavery-practices-on-the-horde/115731/76
arguably all those people freshly raised on battlefields, for less important characters the free will thing goes back and forth