US Army Air Cavalry Patches: An Imperfect Album of US Army Air Cavalry Unit Insignia (2001-2021), for the first time in one place presents a collection of Air Cavalry unit insignia and patches. Collectors and historians alike will find this colorful collection which covers all air cavalry units that were active in the United States Army from September 11, 2001, until 2021 both interesting and informative. The patches and insignia are presented in full color and represent 20 years of collecting and over 3 years of research which are presented on 60 pages.