Ten Days in Sedan continues as our WW2 Blitzkrieg documentary follows the first serious counterblow against the German spearhead. Colonel Charles de Gaulle leads the 4th Armoured Division in an attack against the German flank. De Gaulle’s units are understrength and his assault is improvised but he catches Heinz Guderian by complete surprise. Is this just a fleeting gesture of defiance, or a new kind of French resistance?