The plot of the book 'Карельский перешеек земля неизведанная Часть 11 Северозападный сектор Сяккиярви [Кондратьево]' revolves around the historical and local history of the western part of the Seleznevsky rural settlement of the Vyborg district of the Leningrad region, which until 1940 was part of the Finnish volost of Syakkiyarvi and partially in the volost of Virolahti. The book focuses on the lesser-known hostilities between the USSR and Finland that took place between 1940 and 1944, providing a unique perspective on this period of history. The author uses a variety of sources, including documents and photographs from the National Archive of Finland, the Photographic Archive of the Finnish Defense Forces, the Central Archive of the Ministry of Defense of the Russian Federation, the Russian State Military Archive, the Foreign Policy Archive of the Russian Federation, the Russian State Archive of the Navy, and the Central State Archive of St. Petersburg, as well as materials from private collections, to provide a comprehensive understanding of the events that took place during this time. One of the key themes of the book is the need to study and understand the process of technological evolution, particularly in the context of warfare.

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