Volume five of the Battle Colors series shifts to the Pacific Theater of Operations with a focus on the Fifth, Seventh, Eleventh and Thirteenth U.S. Army Air Forces. As with previous volumes the primary emphasis of this work is group/squadron emblems in addition to combat aircraft tactical markings. Extensive research has resulted in the most complete assemblage of World War II era AAF/PTO combat insignia yet compiled. As in all Battle Colors volumes, these insignia images include both authorized as well as unofficial versions, featuring common variations representative of the time. Historical period photographs depicting the applications of unauthorized emblems are included in the text, providing empirical proof as to their existence and use. All emblems have been carefully recreated to reflect, as nearly as possible, the original artwork of their designers.