As night fell on Thursday 12th December 1940, the air raid sirens sounded and the first wave of Luftwaffe bombers crossed the city. This would be Sheffield city centre’s only large-scale bombing raid of the Second World War.

This app will take you on a walking tour of Sheffield on the night of Thursday 12th December 1940 with the people who were there, including Blitz firefighter Doug Lightning.

The app is Bluetooth Beacon and GPS enabled. This is used to show you relevant content based on your location at the event. Please note that you do not have to be in Sheffield in order to access any of the content in the app.

The app also uses Location Services and Bluetooth Low Energy to determine your location when the app is running in the background. It will trigger notifications when you are close to a location of interest. We have used GPS and Bluetooth Low Energy in a power-efficient way: such as only performing Bluetooth Low Energy scans when you are close to a location that uses bluetooth beacons. However, as with all apps that use location, please note that continued use of GPS running in the background can dramatically decrease battery life.