During the darkest days of the Second World War, as sirens wailed and the drone of enemy bombers filled the night sky, brave volunteers stood on the frontline of civil defence. Armed not with rifles, but with whistles, helmets, and torches, Britain’s air raid wardens were charged with protecting their fellow citizens from relentless bombing attacks. Acting decisively, they enforced blackout regulations, performed first aid and guided people to safety during air raids. By 1941, over 1.4 million men and women had…