Other Interesting Uses of EPI in the LXX

Numbers 3:32: καὶ ὁ ἄρχων ἐπὶ τῶν ἀρχόντων τῶν Λευιτῶν Ελεαζαρ ὁ υἱὸς Ααρων τοῦ ἱερέως καθεσταμένος φυλάσσειν τὰς φυλακὰς τῶν ἁγίων

Numbers 10:14: καὶ ἐξῆραν τάγμα παρεμβολῆς υἱῶν Ιουδα πρῶτοι σὺν δυνάμει αὐτῶν καὶ ἐπὶ τῆς δυνάμεως αὐτῶν Ναασσων υἱὸς Αμιναδαβ

See T. Muraoka, A Greek-English Lexicon of the Septuagint,pages 263-4.