ABSTRACT
IN this article it has been contended that, since war is a particular example of the widespread animal activity of fighting, a scientific study of fighting should and does throw light upon the origin of war. It is now proposed to describe some of the observations upon which we have built our theory of war. First an attempt will be made to review the evidence at present available regarding individual acts of aggression. An attempt will be made to answer the questions : On what occasions do individuals fight? What about? And to what purpose?
