Theoretical publications of OUN members on the formation of the Ukrainian Regular Army
Case study of OUN military activities theory in the interwar period is complex, multifaceted and requires objective analysis of sources. The greatest interest to the characteristics of the main works of M. Kapustiansky V. Kurmanovich, R. Sushko, on the creation of Ukrainian army and military doctrine were fund of the Central State Archive of higher authorities and management of Ukraine, the State Archive of the L’viv Region. Archive of OUN within Olzhych Foundation in Kiev was useful in the study of correspondence material of E. Konovalets, M. Kapustiansky, M. Stsiborsky and others.