At sea
SprueStack Zero Hour: WW2 day by day
21 September 1940
What happened on this day in the Second World War, from 1939 to 1945, with a source for every entry.
About this page
Each day we list events from the Second World War that happened on that date, from 1939 to 1945. Every entry names its source and links to it, so you can read further. Entries are sourced and machine-screened before they go up, a subset is human-reviewed, and we add more over time.
6 of 7 sourced entries for this date, chosen by the editor.
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Entries
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At sea
Rear Admiral H. Kent Hewitt hauls down his flag as Commander Special Service Squadron; gunboat Erie (PG-50) is assigned to the Fifteenth Naval District and sistership Charleston (PG-51) to the Thirteenth.
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Diplomatic record
The Secretary of State to the Ambassador in Turkey (MacMurray)
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Diplomatic record
the Netherlands East Indies: The Chargé in France (Matthews) to the Secretary of State
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Diplomatic record
the Netherlands East Indies: The Consul at Hanoi (Reed) to the Secretary of State
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European Theater
THOR mission records show at least 115 Allied sorties (19 recorded unit missions) in the European Theater on 1940-09-21, flown by RAF. Targets included FRANCE, HOLLAND OR NETHERLANDS, BELGIUM.
Source US Air Force THOR (opens external site)
THOR is a secondary compilation with known gaps, not a complete record.
The full list for this date is being cleaned and will return soon.
Sources listed with each entry. Spotted an error? Tell us.
21 September in other years 19391941194219431944
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