Abstract
The article is focused on one of the first large armed conflicts between Japan and Soviet Union, the Battle of Lake Khasan, which took place in July, 31 - August, 11 1938. In this article, the author analyzes the data of the military casualties of the USSR and Japan in the result of the Battle of Lake Khasan, considering the documentary sources of both countries. To analyze the losses of the Red Army, the data given in the revised sources data is recalculated and revised. By studying the casualties of the countries participating in the conflict, the author points out a great difference between the contemporary information of Russian historical researches on a problem and that of historians in the USSR. In addition, the author points out the mistakes of the Japanese researchers regarding the losses of the USSR and corrects them. It is shown in the article, which types of weapons were more effective considering the nature of the injuries, for example, artillery was very effective, but the bombing of Soviet aviation was almost inconclusive. The effectiveness of Japanese use of cold weapons during hand-to-hand fighting is shown, which is also evident through the nature of injuries. For the first time in Russia, all losses of the Japanese army were tabulated on the basis of the data of the Japan Ministry of Defense. This analysis gives an opportunity to evaluate the Battle of the Lake Khasan from the new side.