At dawn on September 1, 1939, the Wehrmacht's armored spearhead sweeps into Poland. 4 light, 6 panzer, and 4 motorized divisions cut through the sizeable but thinly spread Polish forces. In a foretaste of Blitzkriegs to come, armor, infantry, and artillery fight as a closely coordinated team, while the Luftwaffe rains death from the skies. Gen von Bock's Army Group North strikes into Poland from Pomerania and East Prussia. At the same time, Gen von Rundstedt's Army Group South surges northeast from Slovakia and Silesia. Behind the German armored divisions, about 40 infantry divisions stand ready to exploit the panzers' successes. Everywhere, the woefully unprepared Polish forces are shocked by the speed, scale and ferocity of the German onslaught.
