The presented article, based on an analysis of yet unpublished documents contained in the archives of the Information Center of the MIA of Russia Administration for the Vladimir Region, reveals some aspects of organizing the keeping of interned servicemen of the Czechoslovak Legion in the Suzdal camp of the NKVD of the USSR in the period from the summer of 1940 to September 1941. The article explores legal relations related to the organization, legal confirmation and practice of keeping interned servicemen, as well as the norms of domestic legislation, law enforcement practice and archival data on the problem under study. The purpose of the study is to identify and characterize the main issues of organizing the keeping the category of foreign citizens under study in the Suzdal camp of the NKVD of the USSR during the above-indicated period. The methodological basis of the research was formed by the dialectical method, analysis, synthesis, induction, system-structural, formal-logical methods, as well as the method of historical-legal analysis and formal-legal method. As a result of the work carried out, the prerequisites for the formation of a specialized structural unit in the NKVD system of the USSR were analyzed, the main task of which was the keeping of prisoners of war and internees, the structure of management of the Suzdal camp was also described. The main normative legal acts establishing the procedure for keeping prisoners of war and internees in the camps of the NKVD of the USSR are defined and characterized. The article reveals issues of implementation of internal regulations and disciplinary practice in relation to interned servicemen of the Czechoslovak Legion, as well as some features of their involvement in labor. Conclusions were made about the special status of the Czechoslovak Legion, which was separated from the prisoners of war, and the internees were provided with different conditions and a relatively favorable regime was created, respectively, the organization of the stay in the Suzdal camp of the NKVD of the USSR for such a category of persons in specific historical conditions met the requirements of international law. Keywords: internees, the Czechoslovak Legion, the Department for Prisoners of War, Department for Prisoners of War and Internees of the NKVD of the USSR, the Suzdal camp of the NKVD of the USSR, the organization of the keeping.