Since the passage of UN Security Council resolution 1325, there has been a growing focus on the involvement of women in peacekeeping operations. Ambitious UN targets, the Vancouver Principles, and the Canadian government’s Elsie Initiative all aim to support the increased inclusion of uniformed women in peacekeeping missions. This article discusses three areas in which the Roméo Dallaire Child Soldiers Initiative (Dallaire Initiative) is working to support Vancouver Principle (VP) 11 through the training of women security sector actors, training on gendered dimensions of the recruitment and use of child soldiers and SGBV against child soldiers, and through research on how gender matters in peacekeeping operations. Based on these experiences and an engagement with the academic literature, it makes a number of policy recommendations in support of VP 11.Keywords: gender, peacekeeping, training, child soldiers, SGBV