 A variant of the Foch plan had been used by Poincaré in 1923 when he ordered the French occupation of the Ruhr.French plans for an offensive in the 1920s were realistic, as Versailles had forbidden German conscription, and the "Reichswehr" was limited to 100,000 men.Once the French forces left the Rhineland in 1930, this form of leverage with the Rhineland as collateral was no longer available to Paris, which from then on had to depend on Berlin's word that it would continue to abide by the terms of the Versailles and Locarno treaties, which stated that the Rhineland was to stay demilitarised forever.