Among the examples of collaborationism in Western Europe, the case of France stands out for its extreme heterogeneity. The ultra-right wing parties in Belgium and Holland that concluded alliances with the Nazis clearly took this step largely from a desire to occupy a favourable place in Adolf Hitler’s post-war Europe. The collaborationists faced the need to quickly prove their worth in the eyes of the Germans who, almost no-one doubted, would soon rule the continent. The war against the common enemy represented by the Soviet Union provided ample opportunities of this kind.