insignia
Concise Oxford English Dictionary © 2008 Oxford University Press:
insignia /ɪnˈsɪgnɪə/
▶noun (pl. same or insignias) a distinguishing badge or emblem of military rank, office, or membership.
– origin C17: from L., pl. of insigne ‘sign, badge’, neut. of insignis ‘distinguished’.
'insignia' also found in these Oxford entries:

