Excubitors
The Excubitors (Latin: excubitores or excubiti, lit. 'those out of bed', i.e. 'sentinels'; transcribed into Greek as ἐξκουβίτορες or ἐξκούβιτοι, exkoubitores/exkoubitoi) were founded in c. 460 as an imperial guard-unit by the Roman emperor Leo I the Thracian.