(en) This research article deals with a part of the Belgian, French, British and German Secret Services that acted in the area of Eupen-Malmedy in the 1930's. The aim is to show how these different entities acted and in which manner civilians were involved. After an outline of the peculiar historical context and a presentation of the different Secret Services, we focus on the interesting case studies of Peter Schmitz and Heinrich Niederau, which provide information concerning the allied Bureau of Exchange (BOX).
Beck, P. (2009). Agents secrets à la frontière belgo-allemande. Des Services de Renseignements alliés et allemands entre 1920 et 1940 dans la région d’Eupen. Cahiers d’Histoire du Temps Present, 21, 93-134. https://hdl.handle.net/2078.5/194978 (Original work published 2009)