The German army was much better prepared and equipped than the Polish army. The Germans had a larger number of troops, tanks, and aircraft, and they were also more experienced in warfare. The Polish army fought bravely, but they were outnumbered and outmatched.
The German army quickly advanced into Polish territory, and the Polish government was forced to evacuate Warsaw, the capital city. By September 27, the Germans had reached the outskirts of Warsaw, and the city was surrendered the next day.
The German occupation of Poland was brutal. The Germans carried out mass arrests, executions, and deportations of Poles. Many Polish civilians were sent to concentration camps, where they were subjected to torture and extermination.
The German occupation of Poland lasted for six years, until the end of World War II in 1945. The Polish people suffered greatly during this time, and their country was devastated by the war.