September 7 marks the 80th anniversary of the infamous German bombing campaign against the UK.
From September 1940 until May 1941, German forces led nighttime bombing campaigns against London and other British cities, killing tens of thousands of civilians.
Here are 6 photos of the aftermath.
A postman tries to deliver letters to premises in Watling Street in the City, after a night time German air raid, London, May 1941. The dome of St Paul's Cathedral is in the background.