beginning+of+the+WWII

German forces using combination of air support and concentrated armored spear heads tore holes in polish forces isolating them into smaller pockets of resistance which were then cut off and forced to surrender, Meanwhile Soviet forces in conjunction with a secret un known clause in their non aggression pact with the Germans invaded Poland from the north east effectively allowing the nations to take large chunks of polish territory

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Germany invaded poland in 1939. They fast moving armies encircled polish forces, but the blitzkrig idea never really took hold; artillery and in fantry forces acted in time-honoured fashion to crush these pockets. The Invasion of Poland, also known as the September Campaign or 1939 Defensive war. the polish Army had approximately a million soldiers, but less than 1/2 of them were mobilized by 1 september. The polish military had fewer armored forces than the Germans, and these units, dispersed within the infantry, were unable to effectively engage the enemy.