The history of the Great Patriotic War is an eternal theme as long as there is a historical memory of the people. To do this, scholars and all those who are interested in the topic of war, with all the responsibility is the task of full and objective coverage of the events of those years. For the first time in its history, Yakut soldiers far from their homes with weapons in their hands fought against German fascism. On the fronts of the war, they showed miracles of courage and perseverance. Home front workers, despite all the difficulties of military hardships, their no less heroic work brought the victory day. The war left its indelible mark on the history of Yakutia. It brought her many hardships and tribulations, several tens of thousands of her best sons remained forever on the battlefields. Such large human losses Yakutia in its history has not yet known. This was a real demographic disaster, the consequences of which are felt to this day. The author of this article has set himself the task-to highlight and emphasize the political and philosophical side of the problem. When considering the issues put forward in the foreground is a person. Based on all this, the following problems are highlighted: human losses at the front and in the rear, the conscription of Yakuts, the high percentage of conscription is emphasized, the demo-graphic disaster, the place and role of Yakut soldiers during military battles, the perpetuation of their memory. For the first time the contribution of two scientists to the history of the study of war is compared: A. E. Mordinova and D. D. Petrov. A. E. Mordinov’s book was withdrawn on charges of nationalism. The works of D. D. Petrov also had a very difficult fate of writing and publishing. There are many similarities and similarities in their scientific work, in a word, two personalities - two destinies.