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.
Central Press / Stringer
People sleeping on the crowded platform of Elephant and Castle tube station while taking shelter from German air raids during the London Blitz, 11 November 1940.
IWM/Getty Images / Contributor
Miss Ena Squire-Brown, an international dancer famed for her 'Dove Dance', leaves her recently bombed home for St. George's Church in Forest Hill, to marry Royal Air Force flying officer J.C. Martin, London, 5th November 1940.
Keystone-France / Contributor
September 1940: British citizens take shelter in the subway tunnels under London during the Blitz phase of the Battle of Britain, in which London was bombed every night for 11 weeks straight, England.
Anthony Potter Collection / Contributor
A bus is left leaning against the side of a terrace in Harrington Square, Mornington Crescent, in the aftermath of a German bombing raid on London in the first days of the Blitz, 9th September 1940.
H. F. Davis / Stringer
British Prime Minister Winston Churchill (1874 - 1965) and his wife inspect bomb-damage in the City of London during the Blitz, 31st December 1940.