This discussion of war then lays the foundation for an understanding of change as a process and as an essential component of military affairs. Militaries must change to cope with the changing environment in which they function. The U.S. Army has a robust process to guide change in its combat developments community. Change is also present in the business world, as industry seeks a competitive advantage in order to survive and prosper. The present transformation initiatives in the U.S. Department of Defense seek to maintain the U.S. dominance in military capability in the world and to exploit the opportunities afforded by new technologies and concepts of organization and warfare that use those technologies.The future of military requirements remain a challenge to define. The transformation process tries to define that future and the capabilities needed in order to maintain the security of the United States. Yet enemies of the United States and its allies also seek to predict and mold this future to their advantage. The rise of Islamic fundamentalists or radicalism has changed the global security environment. Western nations must prepare to defeat this threat that is not really new but has risen to new levels of ferocity and lethality.Regardless of the changes in technology, organizational and operational concepts, and external or internal threats, people remain a constant as the crucial element in war. People make decisions to use military and other elements of national power to impose the will of a nation on another group or nations. People also comprise the military services and man the component systems within the services. Any study of war and warfare must address the impact that people make on the conduct of war and the effects of war on people. The political process always includes people. To paraphrase Carl von Clausewitz, war is a continuation of that political process. Leaders who make a decision to fight and those who lead those soldiers, sailors, airmen, and marines into battle must not forget that people implement those decisions and are the object of any offense or defense. Protecting the citizens of the United States is why the nation maintains military forces.