στρατοπεδάρχης stratopedárchēs

Meaning

a ruler of an army, i.e. (specially), a Prætorian præfect

In the King James Version: captain of the guard

Derivation: from G4760 (στρατόπεδον) and G757 (ἄρχω);

Where it is used

• Acts 28:16 When we arrived in Rome, Paul was permitted to stay by himself, with a soldier to guard him.