On the night of 6/7 September 1941 André Bloch parachuted from a converted RAF Whitley bomber onto farmland near Tendu north of Argenton-sur-Greuse in France and after burying his parachute and protective clothing made his way to Paris to become the wireless operator of a clandestine circuit called AUTOGIRO commanded by another SOE agent called Pierre de Vomécourt.
From 15 September to 12 November 1941 Bloch was the only wireless operator in northern France and all the wireless detection capabilities of the Germans were being used to track him down. Although aware of the dangers Bloch was in regular contact with London.
Sometime in October he suspected his safe house was under surveillance and with the assistance of Pierre de Vomécourt he moved to another safe house in Le Mans and after his wireless was delivered by a member of the resistance Bloch contacted London and arranged for weapons and sabotage stores to be dropped to AUTOGIRO. This message dated 12 November 1941 was the last signal received from Andre Bloch.
As was standard procedure home station (the wireless station in England) kept his wireless channel open and the frequency was monitored until confirmation was received of his arrest. According to de Vomécourt Bloch was denounced by a neighbour for being a Jew but it is now believed he remained too long on the air at the same address.
His wireless and codes were never used by the Germans to play back his set to London and supports the belief 27-year-old André Bloch refused to pass his codes to the Gestapo whilst being tortured. Sometime in February 1942 Bloch was executed by firing squad at Mont-Valerian.