Many psychologists and social scientists are unaware of the field of military psychology. Although marginally aware of Division 19: Military Psychology of the American Psychological Association (APA), a number of psychologists have very mistaken ideas about what military psychology includes and the uses thereof (APA Monitor, 1984). The purpose of this special issue is to present some research conducted under the rubric of military psychology. This issue of the Journal of Applied Social Psychology (JASP) may provide some preliminary answers to the frequently asked questions: What is this creature called military psychology? Who does it? What kinds of research are classified as military psychology?What Is Military Psychology?