The author has written a study of Polish suffering under the German occupation in World War II based on interviews and Polish archival sources as well as published material. He discusses the military underground, civilian resistance and collaboration, the Warsaw uprising, and the relations between Poles and Jews. He asserts that the killing of three million non-Jewish Poles by the Nazis is 'an event comparable to what is now generally designated by the word 'holocaust,' i.e, the systematic Nazi attempt to kill Europe's Jews.