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.
History of Germany to a swing to the right. Field Marshal Paul von Hindenburg was elected President in 1925. In October 1925 the Treaty of Locarno was signed by Germany, France, Belgium, Britain and Italy; it recognised Germany's borders with France and Belgium. Moreover, Britain, Italy and Belgium undertook to assist France in the case that German troops marched into the demilitarised Rheinland. Locarno paved the way for Germany's admission to the League of Nations in 1926. The actual amount of reparations that Germany was obliged to pay out was not the 132 billion marks decided in the London Schedule of 1921 but