Alesch pursued his activities as double agent for the Nazis, encouraging young people to resist then delivering them to the occupiers.

He was paid 12,000 Francs monthly, about the salary of a high-ranking officer at the time, and earned a bonus for each person he informed on.

[4] In May 1942, as organiser of the Heckler circuit in Lyon, Hall agreed to have messages from the Gloria Network to be transmitted to SOE in London.

She had doubts about Alesch, especially when she learned that Gloria had been destroyed, but was persuaded of his bona fides, as was the London headquarters of SOE.

Alesch was able to penetrate Hall's network of contacts, including the capture of wireless operators and the sending of false messages to London in her name.

[7] Alesch was sentenced to death and held in Fresnes prison before being executed by firing squad on 25 January 1949 at Fort de Montrouge [fr] in Arcueil.