History -- Biography -- 2 China 2 Foreign relations -- 2 History 2 Aerial operations, American 1 Biography 1 more ... Biological warfare -- 1 Civil War -- 1 Diplomats -- 1 Governmental investigations -- 1 Histoy 1 Military relations -- 1 Personal narratives, American 1 Pilot -- 1 Sino-Japanese Conflict, 1937-1945 -- 1 World War, 1939-1945 -- 1 World War, 1939-1949 -- 1 less ...