By examining twenty-four NATO member states, this book argues that civilian policymakers and military leadership no longer surrender to parochial gendered division of the roles, but rather support integration to meet the recruitment numbers due to military modernization, professionalization and technological advancements. Moreover, it proposes that increased pressure by the United Nations to integrate gender into security and NATO seeking standardization and consistency on the international level, and women’s movements on the domestic level, are contributing to greater gender integration in the military.