American HISTORY 18 Aerial operations, American 16 Military operations, Aerial 16 Military 14 BIOGRAPHY & AUTOBIOGRAPHY 12 Historical 12 World War, 1939-1945 9 World War II 8 Guerre du Viêt-nam, 1961-1975 6 Guerre mondiale, 1939-1945 6 History 6 Vietnam War, 1961-1975 6 Opérations aériennes américaines 5 Vietnam War 5 Armed Forces 4 Bomber pilots 4 Pilotes de bombardiers 4 B-24 (Bombardier) 3 B-24 (Bomber) 3 Campaigns 3 Fighter pilots 3 Histoire des unités 3 Military campaigns 3 Military participation 3 Officers 3 Prisoners of war 3 Regimental histories 3 Weltkrieg 3 B-24 Liberator 2