History 635 World War, 1939-1945 472 Campaigns 172 Holocaust, Jewish (1939-1945) 165 Soldiers 164 World War, 1914-1918 116 Jews 87 Vietnam War, 1961-1975 79 Regimental histories 64 Prisoners of war 53 History and criticism 46 Women 44 Holocaust survivors 42 Politics and government 42 Social conditions 42 Iraq War, 2003-2011 40 Generals 38 Medical care 37 Social aspects 36 Atrocities 34 Aerial operations, American 33 Veterans 33 Prisoners and prisons, Japanese 29 Psychological aspects 28 Afghan War, 2001- 26 Childhood and youth 26 Patients 26 Social life and customs 26 First person narrative 25 Military life 24