"ARMIES WITH WINGS" gives a vivid, complete picture of how a modern air force goes about its business. It defines the different branches of aviation: pursuit, attack, bombardment, reconnaissance and utility. It describes the various planes that do these jobs, their armament, speed, maneuverability, range, etc., and how the jobs are done. It tells of the basic research behind the planes; how they are designed and tested; and how they are manufactured. About the men who fly them, the training of the pilots and the mechanics, the human element, the limitations of the human body at high speeds and altitudes, and in combat maneuvers.

The final section deals with today's aerial strategy; theory versus practice, formation flying, mass combat, antiaircraft defense; about bombing and what it can accomplish.