Germany reoccupied the demilitarised zone in the Rhineland in March 1936, in violation of the Versailles Treaty. Hitler also sent troops to Spain to support General Franco during the Spanish Civil War after receiving an appeal for help in July 1936. At the same time, Hitler continued his efforts to create an Anglo-German alliance. In August 1936, in response to a growing economic crisis caused by his rearmament efforts, Hitler ordered Göring to implement a Four Year Plan to prepare Germany for war within the next four years. The plan envisaged an all-out struggle between "Judeo-Bolshevism" and German Nazism, which in Hitler's view required a committed effort of rearmament regardless of the economic costs.