Topic summary
Militaries

Extracted from the Wikipedia article Military.
As part of society
Militaries often function as societies within societies, by having their own military communities, economies, education, medicine, and other aspects of a functioning civilian society. A military is not limited to nations in of itself, as many private military companies (or PMCs) can be used or hired by organizations and figures as security, escort, or other means of protection where police, agencies, or militaries are absent or not trusted.