Between 1933 and 1945, under the aegis of National Socialist economic policy, German industry overcame a disastrous economic crisis and experienced a boom fuelled by rearmament, before ultimately placing itself in the service of an allembracing war machinery. No aspect of economic life in Germany was able to elude this turn of events. But few sectors of the industry mirrored this development as obviously as construction. The turnovers and profits of German construction companies soared in the course of the 1930s. Industrial and military building programmes as well as the construction of the Autobahn and the Westwall (Siegfried Line) helped to reduce unemployment and prepared the Reich for the war to come. In June 1938, almost 10 percent of the German workforce was employed in construction alone, making it the largest industrial sector in the country's economy. 1 After the outbreak of the war, this massive German construction activity spread all over occupied Europe. The bunkers and gun emplacements of the Atlantic Wall from the Bay of Biscay to the Arctic Sea, airfields, roads and bridges, railways and dams were meant to secure German rule and bind the occupied territories to the new hegemon. More and more often, public authorities like the Armaments Ministry, the Office of the Four Year Plan (Vierjahresplanbehörde) and the Wehrmacht entrusted the planning and administration of their projects to an organisation that had proven its effectiveness during the construction boom of the 1930s: Organisation Todt (OT). The Organisation administered its huge projects with a comparatively small administrative staff consisting of architects and engineers. It provided the construction sites with labour and building materials, while the execution of the projects lay in the hands of private companies. The latter brought along skilled workers, administrative personnel, machines and their technical expertise. During the war, the Organisation had the legal status of a Wehrmacht auxiliary force (Wehrmachtgefolge). This thesis tells the story of the relation between the Organisation Todt and the German construction industry. In particular, it will focus on Einsatzgruppe Wiking (EW), the Organisation's subsidiary in occupied Norway, and its contractors. 2 The thesis rests on the assumption that the OT's German contractors were so vital to its modus operandi that we can only understand the Organisation if we enquire into private industry's role in it. By investigating this relation, I will address three closely related questions. First, I ask what kind of organisation the OT actually was. Only an analysis of the relation between the OT and the construction industry will enable us to situate the OT more precisely in the field between National Socialist