Violent conflict brings together two seemingly disparate groups: humanitarians and soldiers. This mixes and convolutes agendas, blurring lines that are often perceived to be sacrosanct. Delving deeply into the history and reasons of why these two groups work in close proximity, this study provide a unique insight into the history, ethical dilemmas and policy conundrums when aid workers operate close to the military. Using Afghanistan as a case study, analytical rigour, deep primary research and field knowledge are combined in an exceptional contribution to this important area. This book gives scholars and practitioners alike a nuanced perspective on the challenges faced by aid workers, military personnel and decision-makers alike in countries affected by violent conflicts, hosting foreign military interventions and receiving international aid.