page_title: Battle of France
section_title: Deployment
hierarchical_section_title: Battle of France / Prelude / Allies / Deployment
caption_attribution_description: English: The British Army in France 1940 Men of the 1st Royal Welsh Fusiliers practise firing their Boys anti-tank rifles on the beach near Etaples, 6 February 1940.
context_page_description: The Battle of France, also known as the Fall of France, was the German invasion of France and the Low Countries during the Second World War. On 3 September 1939 France had declared war on Germany, following the German invasion of Poland. In early September 1939, France began the limited Saar Offensive. By mid-October, the French had withdrawn to their start lines. In six weeks from 10 May 1940, German forces defeated Allied forces by mobile operations, conquering France, Belgium, Luxembourg and the Netherlands, ending land operations on the Western Front until the Normandy landings on 6 June 1944. Italy entered the war on 10 June 1940.
  In Fall Gelb, German armoured units made a surprise push through the Ardennes, and then along the Somme valley, cutting off and surrounding the Allied units that had advanced into Belgium to meet the expected German invasion. British, Belgian and French forces were pushed back to the sea by the German armies and the British evacuated the British Expeditionary Force, French and Belgian troops from Dunkirk in Operation Dynamo.
  German forces began Fall Rot on 5 June.
context_section_description: The French Army consisted of three army groups. The 2nd and 3rd Army Groups defended the Maginot Line to the east; the 1st Army Group under Gaston Billotte was situated in the west and would execute the movement forward into the Low Countries. Initially positioned on the left flank near the coast, the Seventh Army, reinforced by a Division Légère Méchanique (DLM), was intended to move to the Netherlands via Antwerp. Next to the south were the motorised divisions of the BEF, which would advance to the Dyle Line and position itself to the right of the Belgian army, from Leuven (Louvain) to Wavre. The First Army, reinforced by two light mechanised divisions and with a Division Cuirassée de Réserve (DCR, Reserve Armoured Division) in reserve, would defend the Gembloux Gap between Wavre and Namur. The southernmost army involved in the move forward into Belgium was the French Ninth Army, which had to cover the Meuse sector between Namur to the north of Sedan.
  Lord Gort, commander of the BEF, expected that he would have two or three weeks to prepare for the Germans to advance 100 kilometres (60 mi) to the Dyle but the Germans arrived in four days. The Second Army was expected to form the "hinge" of the movement and remain entrenched. It was to face the elite German armoured divisions in their attack at Sedan. It was given low priority for manpower, anti-aircraft and anti-tank weapons and air support, consisting of five divisions, two were over-age reservist "Serie B" divisions and the 3rd North African Division. Considering their training and equipment, they had to cover a long front and formed a weak point of the French defence system. This stemmed from the French High Command's belief that the Ardennes forest was impassable to tanks, even though intelligence from the Belgian army and from their own intelligence services warned them of long armour and transport columns crossing the Ardennes and being stuck in a huge traffic-jam for some time. French war games in 1937 and 1938 had shown that the Germans could penetrate the Ardennes and Corap called it "idiocy" to think that the enemy could not get through. Gamelin ignored the evidence, as it was not in line with his strategy.
caption: Men of the 1st Royal Welch Fusiliers fire Boys anti-tank rifles near Etaples, February 1940
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