Book excerpt: Few industrial phenomena have been as dramatic as the United States’ mid-20th-century shift from peacetime to wartime production. The American Aircraft Factory in World War II documents the production of legendary warbirds by companies like Boeing, North American, Curtiss, Consolidated, Douglas, Grumman, and Lockheed. It was a production unmatched by any other country and a crucial part of why the allies won the war. Author Bill Yenne considers the prewar governmental acts that got the plants rolling, as well as the gender shift that occurred as women entered the work force like never before. He also describes the construction of megafactories like Willow Run, factory design considerations, and the postwar conversion back to peacetime production. Illustrated with 175 period photographs—including 50 rare color photos never before seen in print.