About the book: 2021 / The fifth book in the series “The Secret Guard of Russia. Essays on the history of domestic state security agencies" continues a series of essays on the history of domestic counterintelligence, the fight against terrorism and banditry, and the participation of state security officers in military conflicts of the twentieth century. The editorial board thanks the authors of the project for their conscientious participation and presentation of unique information, and expresses recognition to respected reviewers for their valuable comments, implemented in the course of publishing work. For specialists and a wide range of readers interested in the history of Russia.