"Dog tags" are small metal identification tags worn on a chain or collar by military personnel. They contain important information like name, blood type, and identification number, which help identify soldiers in case of injury or death.
A collectors edition boxed set of the PC CD version of the game, including a set of dog tags with the unit logo on them, and an art book from the game. (kickstarter.com)
Looks official when we visit my mom's «retirement community» and doubles as a regular ID dog tag with my info and phone number. (nsarco.com)
Let him express his own style with our military - inspired dog tag necklace for kids. (chewbeads.com)