As elsewhere in Europe after the First World War, the Balkans went through a process of “paramilitarization.” Unlike the rest of Europe, there existed a strong indigenous paramilitary culture originating from the time of Ottoman rule. In the interconnected, harsh political realities of victorious Yugoslavia and vanquished Bulgaria, both states and their political elites resolved to create new paramilitary formations. While in the case of Yugoslavia and its Organization Against Bulgarian Bandits there was a resurgence of an older style paramilitary formation, in Bulgaria leading figures of the ruling Bulgarian Agrarian National Union decided to create the Orange Guards—a completely new paramilitary formation based on the existing structure of their party. The common denominator for both formations was the threat posed by the Internal Macedonian Revolutionary Organization for security, territorial integrity, and the normal development of both states. As in most cases of paramilitary formation, their existence and actions were followed by violence, often marked by extreme brutality. Both the agrarian regime and Orange Guards perished in the violent summer of 1923, when a carefully planned and executed coup d’état ended the agrarian revolutionary attempt to transform Bulgarian society. The Organization Against Bulgarian Bandits, under the new name of Peoples Self-Defense, continued to function throughout the existence of the Yugoslav kingdom.