In the first chapter titled "Officership as a Profession", Huntington immediately states his thesis of the book. The purpose is to describe how the "modern officer corps is a professional body and the modern officer a professional man." Additionally, "Officership as a Profession", Huntington defines qualities of a profession and argues that the officer corps conforms to this definition. The qualities of a profession are (1) Expertise, (2) Responsibility, and (3) Corporateness. Specifically, the officer corps display specialized knowledge in the management of violence, maintains a monopoly on education and advancement in their field, and have an overarching responsibility to the society they serve and thus do not 'compete' in the open market. The military profession requires comprehensive study and training, and thus expertise, of an intellectual set of skills: organizing of forces, planning of activities, and executing and directing activities. The military expertise, the management of violence, includes the science of war and combat as well as organizational and administrative skills. The specializations of the military profession expands far and wide since there are engineers, pilots, mechanics, ordinance experts, and more.