The occupation of Poland was one of the most brutal in European history. Occupation aithorities, especially the SS, were under no legal or moral constraints as regards their conduct and the execultion of occupation policies. Poles had no recourse. The NAZI set out to eliminate the Polish intelgencia and reduce the rest of the country to a vast population of slave labor. It is estimated that a quarter of the population of Poland perished during the occupation. Hitler did not view Poland as a legitimate nation. He saw it as a creation of the hated Versailles Treaty ending World War I. Poland had split Germany through the Polish Corridor. He was determined that Poland would never again threaten Germany or limit Germany's drive for lebensraum. The NAZI plan was simple. First they plan to eliminate the Polish inteligencia. Second they would expel Poles and colonize the former Polish areas with Germans. The was given orders to kill Polish prominent civilians and individuals such as government officials, the nobility, teachers, and priests throughout Poland, any would which could promote Polish nationalism or offer leadership.