Prisoners of war Vietnam War, 1961-1975 15 Prisoners and prisons, North Vietnamese 11 Missing in action 4 Veterans 4 History 3 Prisoners and prisons, American 3 more ... Psychology 3 Influence 2 International relations 2 Mexican American soldiers 2 Personal narratives, American 2 Political activists 2 Political aspects 2 Politics and government 2 Prisoners and prisons, Vietnamese 2 Relations 2 Aerial operations, American 1 Airmen 1 American 1 Armed Forces 1 Aviation 1 Buddhism and politics 1 Discrimination in the military 1 Fighter pilots 1 Foreign relations 1 Gender roles 1 Hispanic American veterans 1 Influence (Literary, artistic, etc.) 1 Machismo 1 less ...