An armilla (plural armillae) was an armband awarded as a military decoration (donum militarium) to soldiers of ancient Rome for conspicuous gallantry. Legionary (citizen) soldiers and non-commissioned officers below the rank of centurion were eligible for this award, but non-citizen soldiers were not. Unlike legionaries, auxiliary common soldiers did not receive individual decorations, though auxiliary officers did. However, a whole auxiliary regiment could be honoured by a title as an equivalent award, which in this case would be armillata ("awarded bracelets"), or be granted Roman citizenship en masse as a reward. This entitled an auxiliary regiment to add the appellation civium Romanorum (Roman citizens) to its list of honours.