This thesis examines the intersection between sex, gender, and armed conflict through an analysis of the female combatant experience. It combines anecdotal evidence and quantitative data from various armed conflicts within the past 50 years to reveal how sexism and gendered conceptions of war influence virtually all aspects of the experience of women and girl combatants. Recognizing sexism as a major player in the recruitment, wartime treatment, demobilization, and reintegration of women and girl combatants, it identifies disarmament, demobilization, and reintegration programs as intervention points where gender-aware planning and implementation can improve outcomes for female combatants in the transition to peace.