23rd December 1939: A group of Indian women who have volunteered to man the auxiliary ambulance station in Augustus Street, St Pancras, London, undergoing a gas mask drill at the station. (Photo by Reg Speller/Fox Photos/Getty Images)
23rd December 1939: A group of Indian women who have volunteered to man the auxiliary ambulance station in Augustus Street, St Pancras, London, undergoing a gas mask drill at the station. (Photo by Reg Speller/Fox Photos/Getty Images)