The Battle of Sedan or Second Battle of Sedan (12–15 May 1940) took place in the Second World War during the Battle of France in 1940. It was part of the German Wehrmacht's operational plan codenamed Fall Gelb (Case Yellow) for an offensive through the hilly and forested Ardennes, to encircle the Allied armies in Belgium and north-eastern France. German Army Group A crossed the Meuse with the intention of capturing Sedan and pushing westwards towards the Channel coast, to trap the Allied forces that were advancing east into Belgium, as part of the Allied Dyle Plan.