British Intelligence on the Breton Nationalists the Abwehr and the Sicherheitdiest in France during the Second World War

This compilation of British intelligence documents primarily from MI5 and MI6 offers a detailed look into the espionage and counter-espionage efforts during the Second World War specifically concerning Breton Nationalists aligned with Germany. The records focus on the interrogations of Patrick Guerin and Guy Vissault de Coetlogon both recruited by the German Abwehr and Sicherheitsdienst (SD) to conduct propaganda intelligence gathering and sabotage in France. The reports meticulously document the agents' training missions financial arrangements and the technical aspects of their wireless communications and codes often cross-referencing information from different interrogations and captured documents. Additionally the sources include information on other key Breton Nationalist figures like Olivier Mordrel revealing the inter-service rivalries within the Allied intelligence community and the complex motivations including political fanaticism and financial hardship that led individuals to collaborate with the Germans.