To give the history of this phase of evolution would be to give the history of mankind, and would be aside from the purpose of this work. All that need be attempted, in support of our argument, is to present some general deductions from human history, indicating the leading features of the service man has received from war. Conflict between man and man was at first vague and inconsequential. It was only after settled and organized communities, based originally on the family relation, and held together by the possession of property in common, had been formed, that war became more effective in its results. The chief of these results, in the early days, were two: the breaking up of the old equality of power and possession, and the development of larger and more powerful communities. The head man of the village community, or the herding clan, possessed some delegated authority but no political supremacy over his fellows. Equality existed alike in theory and in fact. Battle between neighboring clans was the first step toward breaking this up. The conquered clan became subordinated to the victorious one, and the chief of the victors, as the representative of his clan, exercised an authority over the subject community which he did not possess at home. The degree of subordination differed from the mild form of tribute-paying to that of personal slavery. But in either case we see the old condition of equality vanishing, and that of class distinctions and the relation of superior and inferior arising, while the power of the chief advances from a delegated authority to an established supremacy. The second outcome of this early phase of war was an increase in the size of political groups. The conquered were forced to aid the conquerors in war as in peace; clans combined to resist aggression; minor communities grew into organized tribes; tribes developed into nations as a result of warlike operations. This growth in political organization was a necessary and inevitable result of continued warfare. The aggressors gathered all the strength possible. The assailed peoples did the same. Temporary alliances grew into permanent ones. Larger armies were formed, larger communities were organized, national development advanced at a rate tenfold, probably a hundredfold, more rapidly than it would have done had peaceful conditions persisted.