The Blitzkrieg in 1914 was stopped because an airplane discovered a gap between the two German Armies...
The most successful part of the 1939 and 1940 Blitzkrieg in Poland and France was the cooperation between Wehrmacht and Luftwaffe, a cooperation that had almost no rival throughout the entire war. Without Stukas ( and other aircraft, of course) destroying antitank artillery and stopping or delaying reinforcing forces I'm not sure that those campaigns would have been so quick as they were. And no aircraft means no aerial reconnaissance, and so no possibility to strike at weakest point of the enemy. Surely Poland and most probably France would have been defeated even without the "assistance" from above: but at what price for Wehrmacht, not only in men and materiel, but also in time, a raw material that Nazi Germany could not afford to waste?
The most successful part of the 1939 and 1940 Blitzkrieg in Poland and France was the cooperation between Wehrmacht and Luftwaffe, a cooperation that had almost no rival throughout the entire war. Without Stukas ( and other aircraft, of course) destroying antitank artillery and stopping or delaying reinforcing forces I'm not sure that those campaigns would have been so quick as they were. And no aircraft means no aerial reconnaissance, and so no possibility to strike at weakest point of the enemy. Surely Poland and most probably France would have been defeated even without the "assistance" from above: but at what price for Wehrmacht, not only in men and materiel, but also in time, a raw material that Nazi Germany could not afford to waste?