Underground movements World War, 1939-1945 610 History 394 Guerrillas 129 War 57 Guerre mondiale, 1939-1945 53 Secret service 52 more ... Mouvements de résistance 50 Jews 47 Politics and government 46 Holocaust, Jewish (1939-1945) 42 Campaigns 32 Histoire 31 Women 28 Guerrilla warfare 25 Vietnam War, 1961-1975 24 History, Military 23 Prisoners and prisons, German 22 Soldiers 22 Counterinsurgency 21 Prisoners of war 19 Spies 18 Escapes 17 Collaborationists 15 Jewish resistance 15 Anti-Nazi movement 13 Foreign relations 13 Rescue 12 Participation, Female 11 Persecutions 11 less ...