Security restrictions at the facilities of the USSR western borderline in the 1930s

Using a set of documents from the central and regional archives of the Russian Federation, the author for the first time analyzed in the context of the mobilization training in the USSR the security restrictions which applied to the facilities protected by the units of the state security agencies troops during the 1930s. The relevance of the approach proposed in the article is that it makes it possible to characterize the mobilization policies in general and the effectiveness of mobilization training as the means of this policy implementation in particular. At the same time, in open access publications there is no analysis of security restrictions at the facilities and other objects of military significance in connection with spatial-territorial, military-civil and evacuation mobilization training. The aim of the work is to study the dynamics of security restrictions at the facilities in connection with mobilization training at the USSR western borderline. The article justifies the conclusion that at the facilities covered by the mobilization measures and transferred under the protection of the state security agencies troops the adjustment of the security restrictions related to their protection and the access control system was carried out according to the changes made to the mobilization plans. In this regard, the research identified the directions for the improvement of protection and access control at the facilities covered by mobilization measures and transferred under the protection of the state security agencies troops. It has been revealed that the restrictions applied to the territories of the sensitive facilities as forbidden zones overlapped with the restrictions of the border regime along the USSR western borderline, which resulted in establishing a multilevel system of security restrictions. It is shown that no less than 41 % of the facilities located at the western borderline and covered by mobilization activities in 1934 and up to 60 % of such facilities in 1939 were under the protection of state security agencies.