Helena Carreiras is an assistant professor of Sociology, public policy and research methodology at ISCTE – University Institute of Lisbon, and a senior researcher at the Centre for Research and Studies in Sociology (CIES- IUL). She holds a PhD in Social and Political Sciences from the European University Institute (Florence). Between 2010 and 2012 she was deputy-director of the Portuguese National Defence Institute and in 2014 she was visiting professor at the Department of Government of Georgetown University. Her research interests are in gender and society, armed forces, civil-military relations, security and defence and research methodology. Her work has focused on gender integration in military institutions and gender aspects of international security. She is the co-editor of Qualitative Methods in Military Studies (Routlege 2013, with Celso Castro) and Women in the Military and in Armed Conflict, (Vs Verlag 2008, with Gerhard Kuemmel), and the author of Gender and the Military. Women in the Armed Forces of Western Democracies (Routledge 2006).