Lieutenant W C Cambray demonstrates the precarious stance required to use the rear-facing Lewis gun fitted to Royal Aircraft Factory F.E.2d biplane of No. 20 Squadron, Royal Flying Corps at Sainte-Marie-Cappel, France. Crew: pilot Captain Stevens, observer Lieutenant W. C. Cambray. The aircraft has a message displayed on the fuselage reading: 'Presented by the Colony of Mauritius No. 13'