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"
France–Germany relations By the war's end, the French army occupied south-west Germany and a part of Austria. Marshal Petain, who ruled France under German supervision, 1940-44, adopted the ideology of National Revolution which was originally based on ideas which had been discussed for years. When the Franco-German reconciliation committee "Comité France-Allemagne" ("French-German Friendship Committee") founded in 1935 in Paris it was an important element for Germany to get closer to France. It adopted Pro-European, Pro-German, anti British, anti liberal political and economic views. Key members of the Committee became the key leaders of the French collaborators with Nazis after 1940. When Marshal