Andrée Raymonde Borrel, code named Denise, was a French woman who served in the French Resistance and as an agent for Britain's clandestine Special Operations Executive in World War II. The purpose of SOE was to conduct espionage, sabotage, and reconnaissance in occupied Europe against the Axis powers, especially Nazi Germany. SOE agents allied themselves with resistance groups and supplied them with weapons and equipment parachuted in from England.

Natzweiler-Struthof was a Nazi concentration camp located in the Vosges Mountains close to the villages of Natzweiler and Struthof in the Gau Baden-Alsace of Germany, on territory annexed from France on a de facto basis in 1940. It operated from 21 May 1941 to September 1944, and was the only concentration camp established by the Germans in the territory of pre-war France. The camp was located in a heavily-forested and isolated area at an elevation of 800 metres (2,600 ft).