Conclusion In total the German Nazi leaders established 22 Concentration camps and hundreds of extension camps throughout Germany, Austria, Poland and the then Czechoslovakia, where Jews, along with Gypsies, homosexuals, Communists, Slavs and others judged "undesirable", were imprisoned. ... Adolf Hitler led his nation to believe in a master Aryan race and if you were not of that category you were condemned to a life of injustice, slave labour, maltreatment, illness, disease and in many cases death. ...