Battle of Belgium

Battle of Belgium. The Battle of Belgium, known within the country as the 18 Days' Campaign, was a major military operation during the Second World War. It began with the German invasion of Belgium on 10 May 1940 and culminated in the Belgian surrender on 28 May, following the Battle of France. The rapid German victory, achieved through the innovative Manstein Plan, forced a large-scale Allied retreat that ultimately led to the Battle of Dunkirk.

Background

Following the German occupation of the Rhineland and the Anschluss with Austria, tensions in Europe escalated dramatically. The Munich Agreement failed to appease Adolf Hitler's expansionist ambitions, leading to the Invasion of Poland in September 1939. This act triggered declarations of war from France and the United Kingdom, beginning the Phoney War period. Belgian policy, under King Leopold III, was strict neutrality, refusing to coordinate military plans with the French Army or the British Expeditionary Force for fear of provoking Nazi Germany. The Allied strategy, the Dyle Plan, relied on a swift advance into Belgium to meet a German attack, but it was fatally countered by the German Manstein Plan, which called for a decisive armored thrust through the Ardennes.

Invasion

The invasion commenced at 04:35 on 10 May 1940 with massive Luftwaffe air raids on key airfields and communication hubs, including Brussels and the fortress of Eben-Emael. German Fallschirmjäger utilized gliders and shaped charges to neutralize Fort Eben-Emael within hours, a stunning tactical success. Simultaneously, Army Group B, under Fedor von Bock, launched a feint attack through the Netherlands and central Belgium, engaging Allied forces along the Albert Canal and at the Battle of Hannut, the largest tank battle of the campaign to that date. The main German effort, however, was the surprise advance of Army Group A through the densely forested Ardennes, led by the panzers of Gerd von Rundstedt, which aimed to cut off the Allied armies in Belgium.

Allied retreat and surrender

The breakthrough at Sedan by German forces created a critical bulge in the Allied line, threatening to encircle the British Expeditionary Force and the French First Army. Facing collapse, the Allies executed a fighting retreat towards the coast. Key delaying actions were fought at the Battle of the Lys and the Battle of the Ypres-Comines Canal, where Belgian forces were pushed to their limits. With communication lines severed and the military situation hopeless, King Leopold III, as commander-in-chief, made the controversial decision to surrender the Belgian Army unconditionally on 28 May. This action exposed the left flank of the Allied forces, accelerating the evacuation from Dunkirk overseen by Lord Gort.

Aftermath

The surrender led to the beginning of the German occupation of Belgium and the installation of a Military Administration in Belgium and Northern France. King Leopold III remained a prisoner at the Royal Castle of Laeken, creating a deep political rift that would become the Royal Question. The Belgian defeat was a catastrophic component of the larger Fall of France, which concluded with the Armistice of 22 June 1940. The campaign demonstrated the devastating effectiveness of Blitzkrieg warfare, combining air power, armor, and infantry. Belgian resistance continued through networks like the Secret Army and involvement in the Allied advance from Paris to the Rhine after D-Day.

See also

* Battle of the Netherlands * Battle of France * Western Front (World War II) * Dunkirk evacuation * Belgian Resistance

Category:Battles of World War II Category:History of Belgium Category:1940 in Belgium