In pictures
The Battle of Britain's 'hardest day'
In 1940 the Royal Air Force resisted major aerial attacks from Germany in what became known as the Battle of Britain. One moment is sometimes singled out as the ‘hardest day’ of the fighting – 18 August. One of the many sites targeted that day was Kenley, an airfield just south of London.
Map of fighter defences

- Date
- 1940
- Catalogue reference
- AIR 41/16
Kenley Station operations record book with site plan

- Date
- December 1939
- Catalogue reference
- AIR 28/419
HQ Fighter Command operations record book

- Date
- August 1940
- Catalogue reference
- AIR 24/507
Kenley operations record

- Date
- August 1940
- Catalogue reference
- AIR 28/419
Report about the attack on Kenley

- Date
- 1940
- Catalogue reference
- AIR 41/16
111 Squadron combat report

- Date
- August 1940
- Catalogue reference
- AIR 50/43/89
Casualty reports from the Battle of Britain

- Date
- 1940
- Catalogue reference
- AIR 81/3484
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