Underground movements World War, 1939-1945 22 History 13 War 9 Guerrillas 4 Holocaust, Jewish (1939-1945) 3 Jews 3 more ... Pacifists 3 Religion 3 Rescue 3 Righteous Gentiles in the Holocaust 3 Anti-Nazi movement 2 Communism 2 General Surgery 2 Guerre mondiale, 1939-1945 2 History, 20th Century 2 Jewish journalists 2 Jewish resistance 2 Jewish socialists 2 Journalistes juifs 2 Mouvements de résistance juifs 2 Physicians 2 Prisoners and prisons 2 Prisoners and prisons, German 2 Prisoners of war 2 Surgeons 2 Underground press publications 2 World War II 2 surgery (health care function) 2 Agriculturists 1 less ...