S. C. Gwynne

"... dirty, bearded, violent, and undisciplined men wearing buckskins, serapes, coonskin caps, sombreros, and other odd bits of clothing, who belonged to no army, wore no insignias or uniforms, made cold camps on the prairie, and were only intermittently paid. They owed their existence to the Comanche threat; their methods, copied closely from the Comanches, would change frontier warfare in North America. They were called by many different names, including "spies," and "mounted volunteers," and "gunmen," and "mounted gunmen." It was not until the middle of the 1840s that they finally had a name everybody could agree on: Rangers."

"The logic of Comanche raids was straightforward: All the men were killed, and any men who were captured alive were tortured to death as a matter of course, some more slowly than others; the captive women were gang-raped. Some were killed, some tortured. But a portion of them, particularly if they were young, would be spared (though vengeance could always be a motive for slaying hostages). Babies were invariably killed, while preadolescents were often adopted by Comanches or other tribes. This treatment was not reserved for whites or Mexicans; it was practiced just as energetically on rival Indian tribes."