*BEWARE OF PROFANITY AT THE END*
A military impostor is a person who makes false claims about their military service in civilian life. 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. In the United States, any person who commits the crime of stolen valor shall be punished by imprisonment in a house of correction for not more than 1 year or by a fine of $1,000, or both such fine and imprisonment.
The real question is who did this guy think he was fooling? He doesn't look the part and cracks under pressure when questioned.