A Marksmanship Device is an award of the United States Navy and United States Coast Guard presented as an attachment to the Marksmanship Ribbon. There are two Marksmanship Devices presented for scoring as a Sharpshooter or Expert on a pistol and rifle qualification course. The Sharpshooter Marksmanship Device is typically referred as the "S Device."
The Expert Marksmanship Device is worn on the Marksmanship Ribbon in lieu of the full sized Marksmanship Medal. When wearing the Marksmanship Medal, the Expert Marksmanship Device is not displayed.