In France, the German 10th Panzer Division began an attack on Calais and captured the town of Boulogne (capturing 5,000 Allied troops), Maubeuge, and Saint-Omer. To the north, the German 1st Panzer Division reached the Aa Canal 10 miles from Dunkerque in an attempt to cut off the Allied troops in Belgium. At this key moment, Adolf Hitler interfered and ordered the tanks to pull back; he was promised by Hermann Göring that the Luftwaffe would be able to prevent the Allied evacuation from taking place; German Army generals protested, but to no avail
