Despite the fact that they're armed service depictions, the headgear is distinguished from "Phrygian helmets" by lengthy ear flaps, along with the figures are also determined as "barbarians" by their trousers. The headgear also appears in 2nd-century BCE Boeotian Tanagra figurines of an effeminate Eros, and in various 1st-century BCE https://directoryarmy.com/listings12558848/5-simple-statements-about-liberty-cap-season-uk-2021-explained