When I started the AAF Collection I was confused over the terms Army Air Corps versus Army Air Forces. My father often spoke of his service in the Air Corps, but the material I found all seemed to refer to the Air Forces. I researched the question and uncovered the following history of the Army Air Forces.
Airplanes were a small part of the Signal Corps at the close of World War I. In that war, they were used chiefly for aerial reconnaissance in support of ground troops. A total of 600 American airmen were killed and 340 planes lost. US planes dropped only 138 tons of bombs.1