Also known as: 認識票, ドッグタグ, 인식표, 狗牌
A dog tag is the informal name for the identification tags worn by military personnel, because of their resemblance to actual dog tags. The tag is primarily used for the identification of dead and wounded along with providing essential basic medical information for the treatment of the latter such as blood type and history of inoculations.
They are also used as fashion accessories.