#4759 στρατοπεδάρχης stratopedarches {strat-op-ed-ar'-khace}

 from G4760 and G0757; TDNT - n/a; n m

—Greek Word Study (Transliteration-Pronunciation Etymology & Grammar)

 1) the commander of a camp and army, a military tribune
 2) Praetorian prefect, commander of the praetorian cohorts, captain
    of the Roman emperor's body guard

 There were two praetorian prefects, to whose custody prisoners sent
 bound to the emperor were consigned.

—Thayer's (New Testament Greek-English Lexicon)

—Strong's (Greek Dictionary of the New Testament)

—NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries

 AV - captain of the guard 1; 1

—Exhaustive Concordance (KJV Translation Frequency & Location)