A more serious approach to its subject than the somewhat superficial War Through the Ages (Harper-P.335) by Lynn Montrous. A book intended primarily for the sociologist, the historian, the student. An assembly and analysis of the facts, the factors, the hypotheses and theories on the source and nature of war. He examines war as both a social and a human institution. He presents an impressively documented compendium of opinions, past and present. How wars are initiated, their periodicity, the types of wars, the evolution of warfare, the changes in fighting methods, the attitudes -- militarism and the foundations of the cult; ideologies; predictions; and -- in the final section -- the analysis of the causation of war, -- fundamental and immediate causes, population pressures, psychological, economic, political, geopolitical and cultural causes, imperialistic motivation. An important book for a defined market.