On September 15, 1939, Japan and the U.S.S.R. concluded a cease-fire agreement. This brought an end to the series of ongoing military clashes, referred to in Japan as the Nomonhan Incident, that had originally started in May.

  • Document 1 is issue No. 85 of Shashin Shuho, which was published on October 4, 1939. It provides coverage of the cease-fire agreement. This issue reports that faced with the Soviet military buildup and subsequent offensive on August 20, the Japanese forces also increased their military strength and mounted a ferocious attack on the Soviet troops. The issue claims that both sides suffered “significant casualties” (see the third image).
  • Document 2 is a document about the lessons drawn from the Nomonhan Incident. It was sent by the Chief of Staff of the Kwantung Army to the Adjutant to the Army Ministry on September 19, 1939, immediately after the conclusion of the cease-fire agreement.
  • Document 3 is a research report about the Nomonhan Incident. It was sent by the Chief of Staff of the Kwantung Army to the Vice Minister for the Army on December 7, 1939. This report includes a chart of the losses up to July 28 of the 23rd Division, which had been heavily engaged with Soviet troops in the field (see the one-hundred and twenty-third image). This chart shows that the Japanese forces had also suffered heavy casualties before the Soviet Army went on the offensive on August 20.




Japan Center for Asian Historical Records, National Archives of Japan