This edited collection examines the changing character of military professionalism and the role of ethics in the 21st-century military. The authors, who range from uniformed military to academics to non-uniformed professionals on the battlefield, delve into whether the concepts of Samuel Huntington, Morris Janowitz, and Sir John Hackett still apply, how training and continuing education play a role in defining a profession, and if a universal code of ethics is required for the military as a profession. Redefining the Modern Military puts a significant emphasis on individual agency for military professionalism as opposed to broad organizational or cultural change.