Jan Fischer, American Soldier In His Military Life

Militaries often function as societies within societies, by having their own military communities, economies, education, medicine and other aspects of a functioning civilian society. Although a "military" is not limited to nations in of itself as many private military companies (or PMC's) can be used or "hired" by organisations and figures as security, escort, or other means of protection where police, agencies, or militaries are absent or not trusted.
• Ideology and ethics
Militarist ideology is the society's social attitude of being best served, or being a beneficiary of a government, or guided by concepts embodied in the military culture, doctrine, system, or leaders.
Either because of the cultural memory, national history, or the potentiality of a military threat, the militarist argument asserts that a civilian population is dependent upon, and thereby subservient to the needs and goals of its military for continued independence. Militarism is sometimes contrasted with the concepts of comprehensive national power, soft power and hard power.