This article discusses the process of the integration of the Lithuanian Riflemen’s Union (LRU) into the state’s defence system in the 1920s and 1930s. The key features and boundaries of the process are outlined, on the basis of archival materials and research literature. An analysis of relations between the military authorities and the LRU reveals individual characteristics of the relationship between the riflemen and the army. The regional context of the process is evaluated within the limitations of the sources available, by presenting the situations of similar paramilitary organisations in Latvia, Estonia, Finland and Poland during the period in question.