Air Raid Precaution (ARP) wardens were an essential part of the war effort on the Home Front, often putting their lives in considerable danger to prevent civilian deaths and casualties. Many ARP wardens were St John Ambulance volunteers.
Foakes, Tom, ed. Treasures: Faith, Care, Valour: Highlights from the Collection of the Museum of the Order of St John. Priory of England and the Islands of the Most Venerable Order of the Hospital of St John of Jerusalem, 2019. Page 171