Boris Nikolaevich Olshansky (August 5, 1910 - June 30, 1958) was born in Voronezh. By education engineer. In October 1941 he was mobilized, went through the war, after the war he served in Germany, in 1947 he fled to the American zone. In exile in America, he worked in the NTS and SBONR, was one of the witnesses in the Katyn case (at hearings in the US Congress). In 1956 he returned to the USSR, lived in Kazan. The book contains a detailed description of the events of the war in the USSR and Europe (including chapters on the ROA, on partisans, on service in Germany, flight, camps for displaced persons, etc.).