If this isn't allowed, I'm sorry. But google fails me. I've been searching and all I could find is that this is a cap badge with 3 prongs. I've found what silver ones mean, ones with years and Rank letters. But mine is bronze and barren on the back. My grandfather was a navy medic and a soldier gave this to his as thanks for helping him. So anyone know what the rank or meaning is? History buffs out there? Anyone? Bueller, Bueller?