John Langellier and C. Paul Loane have collaborated to produce a resource that not only builds upon the information provided by their predecessors, but also contributes fresh material to the body of existing knowledge. These two highly respected and long-time students of American military history have spent decades locating and analyzing specimens in both public and private collections in the United States and Europe. They have woven their individual research into a concise narrative, accompanied by an extensive selection of illustrations and informative captions. Their overview takes the reader on a journey through more than a half century of change, illustrating the variety of factors that contributed to the evolution of U.S. military headgear during this dynamic period.