ABSTRACTOngoing debates in conservation studies stress the dire consequences of ‘fortress’ and ‘militarized’ conservation at violent frontiers. Presenting evidence from Kahuzi‐Biega National Park in war‐torn eastern Democratic Republic of Congo (DRC), this article shows how the park has become a focal point for armed insurgent groups in the region. Although fortress conservation has contributed to one major incident of violent resistance in recent years, it plays only a marginal role in defining the structures shaping the actions of armed groups. These structures — some of which are reproduced and (occasionally) reshaped by armed groups — include the legacies of poverty and insecurity, the geographical features of the park and the presence of illicit trading networks. This perspective emerges only when we zoom out from the park to place it within the context of the history and broader political economy of the DRC. On the one hand, these dynamics severely constrain the agency of conservation organizations, leaving militarized conservation as the only feasible form of enforcement. This approach at times generates violent outcomes for certain groups of people and produces a resource‐rich, isolated terrain which provides a staging ground for broader conflicts to play out. On the other hand, militarized conservation could provide basic law and order at the forest's edge. Ultimately, therefore, militarized conservation plays an ambivalent role vis‐à‐vis security and stability.