Sunday marks the 60th anniversary of the first attack on London by the infamous Doodlebug.
The German V1 flying bomb was seen as one of Hitler's last attempts to change the course of World War II.
More than 2,500 V1s landed on the city followed by the even deadlier V2s which killed about 9,000 Londoners.
The first of the Doodlebugs, designed to terrorise the British, hit a railway bridge in Grove Road, Mile End, east London, on 13 June, 1944.
Nigel Steel, a historian at the Imperial War Museum, told BBC London: "The Germans had always intended that it would be very very frightening.
"And the only hope they had was that this would undermine the remaining resolve of Londoners and that London would fall apart."
But Norah MacKenzie, who survived the bombings in London, said that instead of breaking up the city it brought about a sense of togetherness.
"Everybody looked out for everybody else," she told BBC London.
"If the engine [on a Doodlebug] stopped you were alright, but they didn't just flop down they guided down so you knew that somebody further along would be getting it."