Reading contemporary sources, there can be no doubt that the Battle of the Ruhr marked a turning point in the history of the German war economy, which has been grossly underestimated by post-war accounts.29 As Speer himself acknowledged, the RAF was hitting the right target.30 The Ruhr was not only Europe’s most important producer of coking coal and steel, it was also a crucial source of intermediate components of all kinds. Disrupting production in the Ruhr had the capacity to halt assembly lines across Germany.
