Served under Pompey against the pirates (Caes. BC 3.104; App. BC 2.84-85, Sempronius; Flor. 2.13.52; Dio 42.3-4, and 38.1; Zonar. 10.9; cf. Lucan 8.596f., and Schol. Bern. 279 U; Anth. Lat., ed. Riese2 845). Legates, Ambassadors See 70, Legates. Legates, Envoys (Broughton MRR II)
See MRR 2.147 and 278-279. E. Gabba (Republican Rome, the Army and the Allies 34, and 191, note 96) points out that according to Plut. Pomp. 78.1 Septimius' position under Pompey in 67 was that of centurion (#; so also in Caes. BC 3.104.3, bello praedonum apud eum ordinem duxerat), and only later did he become tribunus militum (Caes. loc. cit.), his rank in 48 when he murdered Pompey.[191x]
(Broughton MRR III)
Formerly a Tribune of the Soldiers under Pompey, he served in this position in the garrison left in Egypt by Gabinius, and at Egyptian command killed Pompey upon his arrival on the coast of Egypt (Caes. BC 3.104; App. BC 2.84-85, Sempronius; Flor. 2.13.52; Dio 42.3-4, and 38.1; Zonar. 10.9; of. Lucan 8.596-636, and Schol. Bern. 279 U, once primipilus under Pompey; Anth. Lat., ed. Riese2 845; see 67, Tribunes of the Soldiers). (Broughton MRR II)