Most air raids took place at night so the German bombers needed to look out for lights down below as this helped them to identify built up areas. To prevent the bombers from seeing towns and cities at night a blackout was enforced across the UK. Special “blackout” curtains helped to prevent the light from escaping through open curtains or doors at night. All outside street lights were also turned off, this made it very dark and dangerous for people trying to find their way at night.
Doris describes what she remembers about the blackout: