Death, Too, For The-Heavy-Runner by Ben Bennett pg.57

And so it was once again with surprise, though scarcely inexperience, that Regis de Trobriand encountered the challenges of October 1869 from the renegade Blackfeet and the presuming Alfred Sully. The Indians presented the lesser threat. Long ago he had articulated the Military tactic to be employed against them. "Range far out during the winter to surprise the permanent villages where the tribes keep their women and children," he advocated. "The confessed aim is to exterminate everyone, for this is the only advantage of making the expedition; if extermination were not achieved, just another burden would be added-prisoners." 
-Death, Too, For The-Heavy-Runner by Ben Bennett pg.57