στρατοπέδ-αρχος (Rec. -ης), -ου, ὁ (< στρατόπεδον, ἄρχω), a military commander, esp. the Pretorian prefect: Act.28:16 (WH, om.).† στρατοπεδάρχης, see: στρατοπέδαρχος (AS)
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 guardThere were two praetorian prefects, to whose custody prisoners sent bound to the emperor were consigned.
From G4760 and G757; a rulerofanarmy, that is, (specifically) a Praetorian praefect
KJV Usage: captain of the guard.
View how G4759 στρατοπεδάρχης is used in the Bible