Military imposter

A military imposter is a person who makes false claims about his or her 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 imposters 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 kind of behavior, so named for the 1998 book of that name. Other terms include "fake warriors", "military phonies", and "medal cheats".

Lying about military service or wearing a uniform or medals that were not earned is criminalized in some circumstances, especially if done with the goal of obtaining money or any other kind of tangible benefit, though laws vary by country.

Military imposters engage in a broad range of deceptive behaviors, all intended to achieve recognition from others. An imposter may make verbal statements, written claims, or create deceptive impressions through actions, such as wearing a uniform, rank insignia, unit symbols, medals, or patches. Generally imposters fall into two broad categories: civilians who have never been in any branch of the military, and real veterans who make false claims about their experiences or accomplishments. Imposters in the latter category may claim any of the following:

While many individuals outright fabricate some or all of their military service history, others employ equivocation tactics or similarly misleading language that avoids making a technically false statement, but still gives a deceptive impression. A common example is stating one was in a branch of the military during a specific war. In many contexts, such a statement implies that the speaker was deployed to a combat zone, even if in reality never left their home country. A similar misleading statement is boasting about being a member of a branch or unit that is well known for its combat prowess and heroic achievements, when the speaker was purely in a logistical role without any combat experience. Imposters also frequently claim to be part of "classified" operations as an excuse for why they cannot provide details or, when confronted, why there is no record of their actions or service.

...
Wikipedia