Sitler had intended to wage a local war to capture Austria and Czechoslovakia, but western appeasement allowed the Germans to win without a fight. On the night of August 31, 1939, gunshots rang out on the border between Germany and Poland. A small number of Polish soldiers crossed the border to attack the Germans. On the morning of September 1, 1939, Sitler's voice resounded over Nazi Germany, when hundreds of thousands of German troops launched a long-planned lightning attack on Poland, and a war began that caused at least 55 million casualties worldwide. Germany assembled its air and armored forces to attack Poland in accordance with the previously formulated White Plan,
Known as the trigger of the Second World War, the German-Polish border incident was actually an incident staged by Sitler himself at the behest of his police inspector General, Heydrich, with the aim of annexing Poland. On the morning of September 3, Britain and France issued ultimatums to Germany almost simultaneously, demanding that Germany provide assurances of an armistice before 11 a.m. and 5 p.m., respectively, or declare war on Germany.
At this time, Germany was no longer the Germany of World War I, nor was it the government of World War I, and the ultimatum of Britain and France was ignored. As a result, Britain and France declared war on Germany one after another, and World War II broke out in full swing. Even more bizarre is that Britain and France declared war on Germany on 3 September but did not want to fulfill their obligations to their ally Poland. Although Poland frequently called for help from Britain and France, Britain and France were slow to move. At that time, Germany had only 23 divisions on the Western Front France alone had more than 100 divisions, as long as Britain and France attacked Germany from the Western Front.
The Germans would be in a dilemma on both the Eastern and Western fronts. On 18 September, only a few areas of Poland, including Warsaw, were at war, and the weak Polish government left Warsaw and went into exile in London, ignoring the people and the country. On 26 September the Germans began bombing Warsaw on 28 September 120,000 defenders surrendered.
On October 2, Gdynia, the last city to resist, ceased to resist, and Poland, with a population of 34 million and more than 1 million troops and 3.89 million square kilometers, was ended by the German army in only one month, and Poland was destroyed. The next Norwegian campaign of land, sea and air operations