This chapter examines some of the tensions which can arise between civilian relief workers and military personnel in these new forms of peace operations. The specific points of tension that explored relate to organizational differences in terms of: organizational culture, tasks and ways of accomplishing them, definitions of success and time frames, abilities to exert influence and control information and control of resources. Interactions between the military and humanitarian workers have been characterized by avoidance or antagonism. Militaries are intervening more and more frequently in intra-state conflicts as they often are being tasked with facilitating humanitarian relief, social reconstruction and protecting civilians in areas where there is no peace. Peace operations are featuring larger numbers of civilian non-governmental organizations who perform a wide variety of relief tasks such as food delivery, monitoring elections and human rights, managing refugee camps, distributing medical supplies and services.