Germany War II in Europe. In response to Hitler's actions, two days later, on 3 September, after a British ultimatum to Germany to cease military operations was ignored, Britain and France declared war on Germany. In the spring of 1940, Germany conquered Denmark and Norway, the Netherlands, Belgium, Luxembourg, and France forcing the French government to sign an armistice after German troops occupied most of the country. The British repelled German air attacks in the Battle of Britain in the same year. In 1941, German troops invaded Yugoslavia, Greece and the Soviet Union. By 1942, Germany and other Axis powers controlled
France–Germany relations regain Alsace-Lorraine and briefly resume its old position as the leading land power on the European continent. France was the leading proponent of harsh peace terms against Germany at the Paris Peace Conference. Since the war had been fought on French soil, it had destroyed much of French infrastructure and industry, and France had suffered the highest number of casualties proportionate to population. Much French opinion wanted the Rhineland, the section of Germany adjoining France and the old focus of French ambition, to be detached from Germany as an independent country; in the end they settled for a promise that