Their army was not strong enough and was not ready for it. They had no air attack and their Naval forces got destroyed by U-boats and other types of boats. The Germans had air attack more troops and just ended up overrunning Poland and taking over. The polish had about a million men fighting but it wasn't enough. Instead of them taking a defensive approach they rushed in got killed instantly. The Germans had gained about 140 miles on the first day of the invasion. Germany signed an act that they wouldn’t destroy all of Poland. So even though Poland pretty much got destroyed some of it didn’t because of the act Germany
Their army was not strong enough and was not ready for it. They had no air attack and their Naval forces got destroyed by U-boats and other types of boats. The Germans had air attack more troops and just ended up overrunning Poland and taking over. The polish had about a million men fighting but it wasn't enough. Instead of them taking a defensive approach they rushed in got killed instantly. The Germans had gained about 140 miles on the first day of the invasion. Germany signed an act that they wouldn’t destroy all of Poland. So even though Poland pretty much got destroyed some of it didn’t because of the act Germany