Question

How do you know that berliners expected a retaliatory air strike ,following that attack on poland.?

Answer 1

They prepared a lightning war which is called Blitz Krieg. This was a plan on the situation since they have studied of the military actions as reactions of the countries that are helping each other, Germany, France and Poland. Germany had the military support of the USSR in agreement that Poland would be divided into two.

Answer 2

Because it was based on a military tactic called blitzkrieg or blitzkrieg it is the popular name that receives a military tactic of attack that involves an initial bombardment, followed by the use of mobile forces attacking with speed and surprise to prevent an enemy from carrying out a coherent defense. The basic principles of these types of operations were developed in the twentieth century by several nations, and adapted years after the First World War, mainly by the Wehrmacht, to incorporate weapons and modern vehicles as a method to avoid trench warfare and the war on fixed fronts in future conflicts.