https://www.livescience.com/archaeology/children-wearing-bronze-warrior-belts-discovered-in-2-500-year-old-cemetery-in-italy
Interesting find
I think they may have it the wrong way round - the bronze belt being a sign of masculinity, which itself encompassed being a warrior as required, rather than being a specific emblem of a warrior. Yes, all warriors have bronze belts... but they are all men.