This book analyses the purpose and nature of war. What is the purpose of war? It is destructive. It causes great anguish and is responsible for countless deaths. Society condemns those people and nations that initiate war without provocation; yet, it still remains a constant element of society. Providing definitions of war, the function of an army and how organizations implement change, this work analyzes why war remains a fixture in human interactions and how a nation can prepare to win such a deadly encounter. This book provides an alternative method of thinking about why wars are fought through its analysis of the power struggle between nations. This book forges a new way of thinking, giving readers a new understanding of war and its effects on society.So, why is war studied? What is its purpose? In this work, the author analyzes the use of war and why it remains a fixture in human interactions. The author describes a connection between wars, armies, and the people affected by them. War is a power struggle between nations who try to showcase their sheer brutality in an attempt for a gain in supremacy; armies, therefore, are the land component of a nation's military forces. The outcome of the war on the land is the most important aspect of the war, since people occupy these lands where wars are fought.Despite changes in technology, organizational and operational concepts, and external or internal threats, people are still a crucial element in wars. People govern whether military forces impose themselves on other nations and control the component systems within military services. Any study of war and warfare addresses the impact that people make on the conduct of war and the effects of war on people. Providing conceptual descriptions of war and explaning the purpose and requirements of a nation's army within the description, the author establishes an alternative method of thinking about the nature of war and how it effects those in society.