Preceded by waves of Stuka dive bombers, which softened up the French defensive positions, swarming with combat engineers who launched rubber boats and threw up pontoon bridges to get across the rivers and canals, each panzer division possessed of its own self-propelled artillery and of one brigade of motorized infantry, and the armored corps closely followed by divisions of motorized infantry to hold the positions opened up by the tanks, this phalanx of steel and fire could not be stopped by any means in the hands of the bewildered defenders.
