What 3 ways did the Germans attack Poland?

Germany's blitzkrieg approach was characterized by extensive bombing early on to destroy the enemy's air capacity, railroads, communication lines and munitions dumps, followed by a massive land invasion with overwhelming numbers of troops, tanks and artillery.

Germany also quickly overran much of Europe and was victorious for more than two years by relying on a new military tactic called the "Blitzkrieg" (lightning war). Blitzkrieg tactics required the concentration of offensive weapons (such as tanks, planes, and artillery) along a narrow front.

uncle sam would be tossing and turning in his grave : *)