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
Military Administration in Belgium and Northern France to ensure its good behavior. The Military Administration formed the core of a wider command structure which allowed the governance of occupied Belgium. It could rely on both military and civilian components: Military Administration in Belgium and Northern France The Military Administration in Belgium and Northern France () was an interim occupation authority established during the Second World War by Nazi Germany that included present-day Belgium and the French departments of Nord and Pas-de-Calais. The administration was also responsible for governing the "zone interdite", a narrow strip of territory running along the French northern and eastern borders. It remained in