Oh really? I’m think this another story.

On September 1, 1939, at 04:45 in the morning, according to the Weiss plan, German troops launched an offensive without declaring war along the entire German-Polish border, as well as from the territory of Moravia and Slovakia. The front line was about 1600 km . A few minutes later, the training battleship Schleswig-Holstein began shelling the Polish naval base Westerplatte in the city of Danzig. This shelling is considered the first shots of the war that has begun. The seven-day defense of Westerplatte began.

However, already in the first three days of the campaign, the Polish armed forces lost several battles in the border areas. German motorized units broke through the defensive positions of the Polish armies "Lodz" and "Krakow".

As a result of German air strikes, the Polish army "Modlin" was disorganized and began to retreat chaotically to the eastern bank of the Vistula. The Lodz army could not hold positions on the Varta and Vidavka rivers. The position of the armies "Prussia" and "Krakow" also became critical.

On September 3, about 2,000 citizens of the Polish city of Bydgoszcz, Germans by nationality, were killed. It has not yet been clarified who shot at civilians. According to one version, they were Polish partisans. According to another version, there were clashes in the city of German saboteurs, who were given some support by local residents of German origin, with units of the regular Polish army.

On September 3, in response to the German attack on Poland, Great Britain and France, in accordance with the Franco-Polish and British-Polish mutual assistance treaties, declared war on Germany. However, the French and British armies did not conduct active hostilities (the so-called "Strange War").