Lexical Definition

‎στρατεύομαι‎ strateúomai (strat-yoo'-om-ahee) to battle ^G:V
middle voice from the base of ‎στρατιά‎

soldier, (go to) war(-fare).

• to serve in a military campaign
• figuratively, to execute the apostolate (with its arduous duties and functions), to contend with carnal inclinations

Abbott-Smith

στρατεύω and depon., -ομαι, so always in NT (< στρατός, an encamped army), [in LXX for מההּ hith., יצא, צבא; metaph., IV Mac 9:23 ;]
used of the general, to make war, do battle, and (chiefly) of the soldiers serving under him, to serve as a soldier: Lk 3:14, I Co 9:7, II Ti 2:4. Metaph. (cf. MM, ii, xxiii), of spiritual conflict, to war, make war: II Co 10:3, I Ti 1:18, Ja 4:1, I Pe 2:11.†

Abbott-Smith References

Liddell-Scott-Jones

στρατεύω-εύω,

(στρατεύωός) advance with an army or fleet, wage war, or rulers, offcers, or men, Κροῖσος ἐνένωτο -εύειν ἐπὶ τοὺς Πέρσας [Refs 5th c.BC+]; οἱ Ἀθηναῖοι -εύσαντες ἐς Πλάταιαν [Refs 5th c.BC+]; ἐστράτευσαν πρὸς Ἄβυδον[στρατεύωείαν ἐστράτευσ᾽ ὀλεθρίαν (i.e. ἐγὼ Ἄδραστος) 5th c.BC: Euripides Tragicus “Supplices” 116; Λακεδαιμόνιοι.. τὸν ἱερὸν καλούμενον πόλεμον ἐστράτευσαν 5th c.BC: Thucydides Historicus 1.112 ">Refs 5th c.BC+]; metaphorically, ἑνὸς δ᾽ ἐπ᾽ ἀνδρὸς δώματα στρατεύωεύομεν (Iris et Lyssa loq.) [στρατεύωεύομεν)">Refs 5th c.BC+]:—so in middle, στρατεύωεύομαι [Refs 5th c.BC+]future -εύσομαι[Refs 4th c.BC+]: aorist ἐστρατεύωευσάμην [στρατεύωεύθην 5th c.BC: Pindarus Lyricus “P.” 1.51, 2nd c.AD: Apollodorus Damascenus Mechanicus 1.9.13 ">Refs 5th c.BC+]: perfect ἐστράτευμαι [Refs 4th c.BC+]; Boeotian dialect 3rd.pers. plural perfect middle ἐστροτεύαθη [στρατεύωεύοισθ᾽ ἐς τὸν Ἑλλήνων τόπον 4th-5th c.BC: Aeschylus Tragicus “Persae” 790 ">Refs 4th c.BC+]; -εύσονται ἐπὶ τὴν ἡμετέρην [Ἀθηναῖοι] [Refs 5th c.BC+]; ἐστρατεύωευμένοι γάρ εἰσι they have been soldiers, have seen war-service, [στρατεύωεύσομαι 5th-6th c.BC: Aristophanes Comicus “Thesmophoriazusae” 232, compare 5th c.BC: Eupolis Comicus 117.8 ">Refs 5th c.BC+]; ὁπλίτης σ. [στρατεύωεύεσθαι 4th c.BC: Aristoteles Philosophus “Ἀθηναίων Πολιτεία” 53.7; σφι ἐδόκεε -εύεσθαι ἐπὶ τὰς Θήβας 5th c.BC: Herodotus Historicus 9.86; ἐπὶ τοῦ κρυστάλλου -εύονται.. πέρην ἐς τοὺς Σίνδους [prev. author] 4.28; σ. μετά τινων 5th c.BC: Euripides Tragicus “Iphigenia Aulidensis” 967; ὑπὲρ τῆς πόλεως 5th-6th c.BC: Plato Philosophus “Respublica” 429b; τῆς σῆς οὕνεκ᾽.. γυναικός 5th c.BC: Sophocles Tragicus “Ajax” 1111; ὑπό τινι 1st-2nd c.AD: Plutarchus Biographus et Philosophus “Camillus” 2; ἐπ᾽ Αἴγυπτον 5th c.BC: Herodotus Historicus 3.139; ἐς τὴν Ἀσίην [prev. author] 1.4, compare 5th-6th c.BC: Andocides Orator 3.30, etc.; κατὰ Ἐφεσίων “OGI” 437.70 (Pergam., 1st c.BC)">Refs 5th c.BC+]; πρὸς τὴν τῶν Ὀλυνθίων πόλιν [Refs 5th c.BC+]; μισθοῦ σ. [Refs]; πανδημεὶ ἔξω σ. [Refs 5th c.BC+]; opposed to ἐπιδημεῖν, [Refs 5th c.BC+]; opposed to δημηγορεῖν, [Refs 5th c.BC+]; στρατεύωευσάμενος,= a militiis, [στρατεύωείας -ευόμενος 4th c.BC: Isaeus Orator 10.25. ">Refs 4th c.BC+]

__2 middle, serve in the army, τυΐ πρᾶτον ἐστροτεύαθη the following have joined the army for the first time, [Refs]; μηδεὶς ἐαθῇ -εύσασθαι to join the army, [Refs 2nd c.BC+]; οἱ -ευόμενοι Ἕλληνες the Greeks who are in the army, [Refs 5th c.BC+]active and middle, as in [Refs]; in Attic dialect and later Gr. [Refs 2nd c.BC+]middle is much the more frequently
__II later, in active, take or receive into the army, enroll, enlist, [Refs 1st c.BC+]:— passive, τῶν νεολέκτων τῶν -ευθέντων ὑφ᾽ ἡμῶν [Refs 4th c.AD+]; ὁ νῦν -ευθεὶς τίρων [Refs 4th c.AD+]
__III see at {στραγγεύομαι}.