The historiography of the Greek civil war has made significant progress during the past decade, but the origins, role and activities of paramilitaries remain under-researched. Most studies have focused on the period of the ‘white terror’ and explored the collusion between the state and the paramilitary groups. Although such studies have advanced our understanding of this turbulent period, they have not discussed important issues such as the motivation of the rank and file members, the sociopolitical networks used to recruit and mobilize support and the diverse conditions under which militias emerge. The article will address this lacuna and provide new insights into the origins, development and legacies of paramilitarism.