Peter J. Rowe & Christopher J. Whelan 
Military Intervention in Democratic Societies [PDF ebook] 

This book, first published in 1985, provides a comprehensive treatment of the role of the military within civil society. With analysis from a policing and military viewpoint (both rarely available in public), and legal and historical perspectives, this book sheds valuable light both on the role of the law in democratic societies, and on the way the balance between the state and civil liberties has been struck.