The article offers an overview and reflection on the dynamics of the military role taking into account different security contexts and significant others. It analyses two dominant types of military roles: warrior embedded in the realistic perspective on security and peacekeeper grounded in the liberal approach. Finally, it examines the dynamics of the modern military role in the light of the internal-external security nexus. The article shows that the contemporary military role needs not only to combine warrior and peacekeeper roles but also develop some new elements in order to meet the requirements of the contemporary security context.The article begins by setting a theoretical framework that allows for an analysis of drivers of change of...