'Action taken by coastal cities to prevent U-Boats from targeting the silhouettes of ships'
turning the lights out (or a blackout)
IN THE NIGHT: Action taken by coastal cities to prevent U-Boats from targeting the silhouettes of ships
Action taken by coastal cities to prevent U-Boats from targeting the silhouettes of ships
Action taken by coastal cities to prevent U-Boats from targeting the silhouettes of ships
IN THE NIGHT
turning the lights out or a blackout
IN THE NIGHT