Columbia subject headings:
Fortification--Rome.
Inscriptions, Latin.
Rome--Antiquities.
Rome--Army--Cavalry.
Soldiers' monuments--Rome.
Harvard subject headings:
Inscriptions, Latin.
Rome--Army.
Rome--History
Princeton subject headings:
Equites singulares imperatoris.
Inscriptions, Latin--Europe, German-speaking.
Rome--History, Military.