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The Aeronautical Division, Signal Corps (1907?1914) was the first heavier-than-air military aviation organization in history and the progenitor of the United States Air Force. A component of the U.S. ...
Wikipedia Article
The Aviation Section, Signal Corps, was the military aviation service of the United States Army from 1914 to 1918, and a direct statutory ancestor of the United States Air Force. It absorbed and repla ...
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