The term "Nazi invasion" typically refers to the military campaigns conducted by the Nazi Party of Germany during World War II. The most notable invasion was the attack on Poland in September 1939, which marked the beginning of the war in Europe. This invasion was characterized by the use of blitzkrieg tactics, combining fast-moving ground troops with air support to quickly overwhelm enemy defenses. Following the invasion of Poland, the Nazi regime continued its aggressive expansion across Europe, invading countries such as France, Belgium, and the Netherlands. These invasions were often accompanied by brutal occupation policies, leading to widespread suffering and the implementation of the Holocaust, which targeted millions of Jews and other groups deemed undesirable by the Nazis.