G4759
στρατοπεδάρχης
commander
στρατοπέδ-αρχος (Rec. -ης), -ου, ὁ (στρατόπεδον, ἄρχω), a military commander, esp. the Pretorian prefect: Act.28:16 (WH, om.).† στρατοπεδάρχης, see: στρατοπέδαρχος (AS)
The KJV translates G4759 in the following manner:
guard (2x)
Full Thayer's lexicon entry
στρατοπεδάρχης
στρατοπεδάρχης, στρατοπεδαρχου, ὁ (στρατόπεδον and ἄρχω) (cf. Buttmann, 73 (64));
a. the commander of a camp and army, a military tribune: Dionysius Halicarnassus 10, 36; Lucian, hist. conscr. 22; (Josephus, b. j. 2, 19, 4).
b. Praetorian prefect, commander of the praetorian cohorts, i. e. captain of the Roman emperor's bodyguard: Act 28:16 (L T Tr WH omit the clause, see Abbot in B. D., American edition, under the word, Captain of the Guard). There were two praetorian prefects, to whose custody prisoners sent bound to the emperor were consigned: Josephus, Antiquities 18, 6, 6; Pliny, epistles 10, 65 (57). (See B. D. American edition as above; Lightfoot on Philippi, p. 7f.)
STRONGS NT 4759a: στρατοπεδαρχος [στρατοπεδαρχος, στρατοπεδαρχου, ὁ: see the preceding word. The dative στρατοπεδάρχῳ is the reading of some manuscripts (cf. WH rejected marginal reading) in Act 28:16; cf. ἑκατοντάρχης, at the beginning]
1 occurrence