History 622 Regimental histories 285 Generals 143 Officers 129 Soldiers 87 Biography 64 Pennsylvania Infantry 63 more ... Campaigns 55 World War, 1914-1918 55 World War, 1939-1945 55 Armed Forces 45 Drill and tactics 45 Military life 35 Recruiting, enlistment, etc 35 Personal narratives 34 Army 33 Presidents 33 Indians of North America 32 Histoire 31 History, Military 31 African American soldiers 30 Registers 30 Participation, Afro-American 25 African American troops 23 African Americans 21 Gettysburg, Battle of, Gettysburg, Pa., 1863 21 Presidential candidates 20 Mexican War, 1846-1848 19 Regulations 18 Uniforms 18 Wars 18 Legislators 17 Histoire des unités 16 Participation, African American 15 Campaign biography 14 Draft 14 Handbooks, manuals, etc 14 Medals, badges, decorations, etc 14 Sources 14 Description and travel 13 less ...