This book describes the Yugoslav Army’s organisation, stressing the differences in pre-1948 and later reorganisations during the conflict. It provides the reader with detailed orders of battle of the Yugoslav Army based on archival research. COMINFORM Crisis also describes the attempts of the Yugoslavs to establish an indigenous defence industry during this period to overcome the problem of supplying its army, stressing the development of the first Yugoslav tank, piston engine fighters, several types of vessel for the navy, and series of small arms. This book also examines the work of the Yugoslav Counterintelligence Service (KOS) and State Security (UDBA) in the widespread struggle with the Soviet and satellite intelligence services on the borders and in the ranks of the army and security forces.