An Ex-Marine, a veteran, and one who wears a costume.
Look at his protests and interviews, he wears a partial marine work uniform, with dress ribbons added, a costume.
Good chance that he is not a ex marine.
Thomas is wearing a Marine utlity blouse.
with dress(sic) ribbons added
Ribbons are ribbons. They are not dress(sic) ribbons. Ribbons are worn on service and dress uniforms. Not utilties.