Native American cultures were, depending upon tribes, themselves extremely ruthless in prosecuting warfare against themselves. (intertribal conflict)....historical instances of entire villages being wiped out including women, children and dogs is written repeatedly in their own histories. There were times in history when native Americans wiped out entire settlemements of European settlers as a common practice. I am sure they thought nothing of it at the time as this type of no quarter warfare is consistent with hunter/gatherer cultures of the era.
We did cross the line at times but I do not believe it was a preconceived "policy" but more an indication of the times themselves other than isolated instances of individual acts of murder in war. .. Example given.. the Wounded Knee massacre in Pine Ridge South Dakota.
