Eddie Rickenbacker’s Visor Cap. With 26 aerial victories in World War I, Rickenbacker was the most successful fighter pilot in the U.S. Air Service. He was issued this cap by the Philadelphia Quartermaster Depot. Rickenbacker, who had a lifelong fear of heights, was dubbed “the Ace of Aces,” though he disliked that title, feeling that “it carried the curse of death.” (International Military Antiques)