The Women, Peace and Security (WPS) agenda has significant relevance to defence, yet tensions remain between defence and the normative foundations of the agenda drawn from the activism of anti-militarist civil society, who sought to end war, rather than making war safe for women. This report highlights that there is still significant scope for the engagement of defence with WPS in a way which is sensitive to such concerns; notably, through a focus on diversity and inclusion, engaging civil society as knowledge brokers of WPS, training and education, leadership and the role of gender advisors. It draws on a review of the extant literature and Key Informant Interviews (KIIs) to identify best practice and areas for future research.