German invasion of Belgium Journals Websites German invasion of Belgium The German invasion of Belgium was a military campaign which began on 4 August 1914. Earlier, on 24 July, the Belgian government had announced that if war came it would uphold its historic neutrality. The Belgian government mobilised its armed forces on 31 July and a state of heightened alert () was proclaimed in Germany. On 2 August, the German government sent an ultimatum to Belgium, demanding passage through the country and German forces invaded Luxembourg. Two days later, the Belgian Government refused the demands and the British Government guaranteed military support to Belgium.
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