Battle of Belgium (German: "Zusammenfassender Bericht des Oberkommandos der Wehrmacht über die Operationen im Westen vom 10. Mai bis 4. Juni") reports: Battle of Belgium The Battle of Belgium or Belgian Campaign, often referred to within Belgium as the 18 Days' Campaign (, ), formed part of the greater Battle of France, an offensive campaign by Germany during the Second World War. It took place over 18 days in May 1940 and ended with the German occupation of Belgium following the surrender of the Belgian Army. On 10 May 1940, Germany invaded Luxembourg, the Netherlands, and Belgium under the operational plan "Fall Gelb"
History of France of the continent, including France, to be drawn into war within a few short weeks. Austria-Hungary declared war on Serbia in late July, triggering Russian mobilization. On 1 August both Germany and France ordered mobilization. Germany was much better prepared militarily than any of the other countries involved, including France. The German Empire, as an ally of Austria, declared war on Russia. France was allied with Russia and so was ready to commit to war against the German Empire. On 3 August Germany declared war on France, and sent its armies through neutral Belgium. Britain entered the war on 4