Research on women in the military is becoming an increasingly important area of inquiry in the social sciences. Women are essential to the operation of contemporary armed services, and this has led to recent changes in organizational policies leaning toward equalizing the status of men and women in uniform. As the decades of the seventies and eighties witnessed an expansion in the role women would play in national defense, the twenty-first century is experiencing a movement toward parity between men and women in the military. This is the case not only in the United States, but in other nations as well. This movement toward gender equality is slow as it goes against the traditional social norms of most societies and is met with a number of obstacles. Although this chapter focuses primarily on historical and contemporary changes in the representation and