Underground movements World War, 1939-1945 40 History 16 Secret service 8 Collaborationists 4 Guerre mondiale, 1939-1945 4 Mouvements de résistance 4 more ... War 4 Escapes 3 Guerrilla warfare 3 Intellectual life 3 Occupied territories 3 Aerial operations, German 2 Anti-Nazi movement 2 Equipment and supplies 2 Foreign relations 2 Histoire 2 History, Military 2 Holocaust, Jewish (1939-1945) 2 Intellectuals 2 Intelligence officers 2 Officiers de renseignements 2 Politics and government 2 Propaganda 2 Propaganda, British 2 Radio in propaganda 2 Service secret 2 Spies 2 V-1 bomb 2 V-2 rocket 2 less ...