Jim Mattis & Kori Schake 
Warriors and Citizens [PDF ebook] 

A diverse group of contributors offer different perspectives on whether or not the different experiences of our military and the broader society amounts to a "gap"-and if the American public is losing connection to its military. They analyze extensive polling information to identify those gaps between civilian and military attitudes on issues central to the military profession and the professionalism of our military, determine which if any of these gaps are problematic for sustaining the traditionally strong bonds between the American military and its broader public, analyze whether any problematic gaps are amenable to remediation by policy means, and assess potential solutions.