World War, 1939-1945 74 History 62 Large type books 18 Soldiers 18 World War, 1914-1918 13 Underground movements 11 Electronic books 9 Imaginary wars and battles 9 Murder 9 Women 8 Boyle, Billy (Fictitious character) 7 Campaigns 7 Intelligence officers 7 Investigation 7 Space warfare 7 War stories 7 Women spies 7 Adventure stories 6 Trojan War 6 Foreign relations 5 Man-woman relationships 5 Undercover operations 5 Families 4 Female friendship 4 Friendship 4 Greeks 4 Iraq War, 2003-2011 4 Naval operations, American 4 Officers 4 Participation, Female 4 Prevention 4 Sisters 4 Terrorism 4 Afghan War, 2001- 3 Americans 3 Assassins 3 Brothers 3 Civil war 3 Concentration camp inmates 3 Family relationships 3 History, Military 3 Holocaust, Jewish (1939-1945) 3 Jewish men 3 Jews 3 Kidnapping 3 Korean War, 1950-1953 3 Pearl Harbor (Hawaii), Attack on, 1941 3 Social conditions 3 Survival 3 Veterans 3 more ...