Strong's G5506 — χιλίαρχος (noun)
chiliarchos (khil-ee'-ar-khos) n.
1. the commander of a thousand soldiers ("chiliarch"), i.e. colonel
[from G5507 and G757]
KJV: (chief, high) captain 
Root(s): G5507, G757 
Hebrew root: ἄρχω
Occurrences: 21