This monograph is the fourth in a series on the Army's Professional Military Ethic (PME) that the Chief of Staff of the Army, General George W. Casey, Jr., inaugurated in October 2009. In his series foreword, General Casey encouraged the Army to "think critically about our PME and promote dialogue at all levels as we deepen our understanding of what this time-honored source of strength means to the profession today." In this monograph, Colonel Tony Pfaff explores the ethical challenges facing the Army in an era of persistent conflict dominated by a variety of irregular threats. Pfaff argues...