An additional factor to consider here is—as Dyer points out—that the extremely rare “natural soldiers” who are most capable of killing (those identified by Swank and Marchand as the 2 percent predisposed toward aggressive psychopathic tendencies) can be found “mostly congregating in the commando-type special forces [units].” And it is just such units as these that are usually given the mission of conducting combat patrols behind enemy lines.
