Historian Pekka Hämäläinen, in his 2009 book The Comanche Empire,
< >

writes of Comanche uses of slavery during their period of dominance of the American Southwest between 1750 and 1850. The Comanche exercised hegemony in part by numerical superiority, and enslavement was part of that strategy. Hämäläinen writes that Comanches put captives through a rigorous process of enslavement—a dehumanizing initiation that brought a non-Comanche captive into the tribe through renaming, tattooing, beating, whipping, mutilation, and starvation—but stipulates that once a person was enslaved, there were varying degrees of freedom and privilege she or he could attain. Male captives might be made blood bondsmen with their owners, protecting them from ill treatment and casual sale; women might be married into the tribe, after which time they became, as Hämäläinen puts it, “full-fledged tribal members”; younger, more impressionable children might be adopted outright. After a period of trauma, captives could, quite possibly, attain quasi-free status; their own children would be Comanches.