History 1,963 Campaigns 283 Politics and government 260 Social aspects 189 Generals 136 Soldiers 125 Regimental histories 121 African Americans 113 Slavery 105 Social conditions 102 Reconstruction (U.S. history, 1865-1877) 99 Causes 95 Influence 72 Women 69 Slaves 62 Race relations 51 Naval operations 50 Presidents 50 Emancipation 47 History, Military 46 Military leadership 46 History and criticism 45 Political aspects 42 Gettysburg, Battle of, Gettysburg, Pa., 1863 41 Secession 41 Literature and the war 37 Participation, African American 35 Medical care 33 Foreign relations 32 Prisoners and prisons 32