In this chapter, we review how the Canadian Armed Forces (CAF) conceptualizes military professionalism with an equity, diversity, and inclusion lens. We ask how the can CAF redefine military professionalism based on changing social and cultural norms. By examining the CAF’s Duty with Honour manual, which defines Canada’s military professionalism, we argue that diversity considerations are underdeveloped. We then turn to the academic and applied literature on military, professionalism to identify opportunities for conceptual and doctrinal adaptation as governments and armed forces embark on culture change. Based on our examination of changing social and cultural norms that have impacted the CAF, we stress the importance of updating common understandings of military professionalism, in theory, and amending the way it is taught.