Based on the original archival material and other relevant sources, the paper analyses the genesis, structure and disappearance of the so-called “Serbian Army of Krajina”. The political framework of the crisis in the SFRY is given at the beginning of the paper. That is, the causes and developments that led to the political crisis at the end of the existence of federal state, and to abuse of the bodies of that federal state in order to implement the Serbian nationalist concept. The basis of the SFRY's defence doctrine was the concept of general national defence and collective self-defence (ONO and DSZ), and the paper provides an overview of the basic conceptual principles of that doctrine. The doctrine of the ONO and the DSZ resulted in the creation of a Territorial Defence (TO). The TO structure was primarily the responsibility of the republics. Further on, the work continues with the genesis of the political crisis in the final stages of existing of SFRY, mainly considering the process of democratization in the western republics, which have been used in an attempt to impose a solution to the political crisis through the option of war. Serbian nationalism took advantage of the fifty years of imposing fear on the Serbian national community in the territory of Croatia from the creation of the Croatian state by constantly recalling the events of the II. world war. The aforementioned fear was used as a drive for Croatian Serbs to rebel against a legally elected Croatian government. The rebel Serbs use the existing TO system through which they form their units and actively engage in combat operations. Since the TO system was the foundation upon which the so-called "Serbian Army of Krajina" was formed, an overview is given of the development of TO units established by rebel Serbs in the occupied areas of Croatia. With the arrival of UN forces in the occupied territories, the process of demobilization of the existing TO units of so-called “Republic of Serbian Krajina” was first carried out, and then at the end of the same year the process of establishing so-called "Serbian Army of Krajina” (SVK) have begun. The creation of the General Staff and units of the SVK is given in the paper with special emphasis on describing the main processes within the SVK itself. The never-ending relationship between the Yugoslav Army and the SVK is particularly emphasized. In other words, the basic thesis was confirmed that the SVK would not be able to survive as an independent military organization without the financial and material and especially militaryprofessional reliance on the Yugoslav Army. Eventually left without the support of the brotherly armies (the Army of Yugoslavia and the Army of Republic Srpska), the so-called "Serbian Army of Krajina" has reached its final end during the Operation Storm.