World War, 1939-1945 75 Campaigns 28 Vietnam War, 1961-1975 27 History 24 Military campaigns 21 Soldiers 20 Armed Forces 16 more ... Aerial operations, American 11 American 11 Prisoners of war 11 Military operations, Aerial 10 World War, 1914-1918 10 Medical care 8 Korean War, 1950-1953 7 Regimental histories 7 Japanese Americans 6 Forced removal and internment, 1942-1945 5 Iraq War, 2003-2011 5 Journalists 5 War 5 Concentration camps 4 Generals 4 Marines 4 Officers 4 Prisoners and prisons, Japanese 4 Underground movements 4 Veterans 4 Air pilots, Military 3 Fighter pilots 3 Medical personnel 3 less ...