German General Guderian resumed his attack, capturing territories between Saint-Quentin and P_ronne. His troops were now within 50 miles of the English Channel and had cut off the Allied troops in Belgium. British Expeditionary Force commander General Lord Gort issued the order to withdraw toward port cities, including Dunkirk, while Colonel de Gaulle's French 4th Armored Division made a failed attempt to attack Guderian's flank at Montcornet