This book provides a pictorial overview of the progress of American military airplane design from approximately the end of World War I to the present time. It covers all types including attack, pursuit or fighter, cargo, trainer, and other models via a series of type sections. There are introductions to each section followed by photographic coverage along with extensive photo captioning providing highlights of characteristics and service use. Thus over three quarters of a century of Army and Air Force airplanes are displayed. Primary sections include production airplanes and variants, and a following photo gallery section covers experimental models. A few important export military types are also included. The illustrations and text portray in quite dramatic fashion the advances in U.S. military plane design over the period, including progress from "stick and wire" craft to the latest sleek turbine powered types.