This is an original WWII U.S. Army Air Corps/Force officer's service cap. Its original owner removed the cap's interior wire stiffener, allowing the hat to be reshaped and "crushed" into a silhouette more popular among American airmen. It is constructed of "chocolate" brown gabardine wool, and features a russet brown leather brim and chinstrap. The front is decorated with the brass "large eagle" insignia, as used by U.S. Army officers. Unfortunately, there is damage to the headband throughout and no size tag or manufacturer's marking could be located.