World War, 1914-1918 - Aerial operations.

Beneficial bombing[electronic resource] :the progressive foundations of American air power, 1917-1945 / …で: (言語・文字資料 (印刷物))

World War, 1939-1945

Progressivism (United States politics)

Precision bombing

Air power

World War, 1914-1918

Bombing, Aerial