Military impostor
A military impostor is a person who makes false claims about their military service in civilian life. This includes claims by people that have never been in the military as well as lies or embellishments by genuine veterans. Some individuals who do this also wear privately obtained uniforms or medals which were never officially issued to them. In British military slang, such impostors are called "Walts", based on James Thurber's fictional character, Walter Mitty, who daydreamed of being a war hero. In the United States since the early 2000s, the term stolen valor has become popular slang for this behavior, named for the 1998 book Stolen Valor.