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Permanent historical records · Updated 2026-11-03

1920 in Japan

Explore 5 historical events and records for Japan in 1920.

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Historical records for Japan in 1920

Sorted by month and day. Records with no month are shown last. Showing 5 of 5 unique records.

5Unique records
1 of 1Page
5Named events on this page
3Named people on this page
3Places on this page

August

Battle of Nomonhan

Shiro, Ishii · Nomonhan · Warfare / Military

Founds Unit 731 for biological & chemical warfare, possibly used at Nomonhan

Unit 731

Shiro, Ishii · Warfare / Military

Founds Unit 731 for biological & chemical warfare, possibly used at Nomonhan

Other events (month unknown)

Home Secretary of Japan

Goto, Shimpei · Home Secretary of Japan · Government / Government of Japan

Appointed Home Minister

League Council

Ishii, Kikujiro · Geneva · Japanese Diplomat · Warfare / League of Nations

Represents Japan in League Council affairs.

Mayor

Goto, Shimpei · Tokyo · Mayor of Tokyo · Government / Government of Japan

Appointed Mayor of Tokyo

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How these records were prepared

Generated from the World History Database historical_events table. Identical display records are collapsed; descriptions otherwise retain the stored text. Coverage and source quality vary. Check primary and specialist sources before citing individual historical claims.