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 “phony war”. When the Germans launched their blitzkrieg invasion of France in 1940, the French Army crumbled within weeks, and with Britain retreating, an atmosphere of humiliation and defeat swept France. A new government under Marshal Philippe Pétain surrendered, and German forces occupied most of the country. A minority of the French forces escaped abroad and continued the fight under General Charles de Gaulle (the “Free French” or “Fighting French”). On the other hand, the French Resistance conducted sabotage operations inside German-occupied France. To support the invasion of Normandy of 1944, various groups increased their sabotage and guerrilla attacks; organizations