ἀντισιγνανός
From LSJ
τῶν δ᾽ ὀρθουμένων σῴζει τὰ πολλὰ σώμαθ᾽ ἡ πειθαρχία → But of those who make it through, following orders is what saves most of their lives (Sophocles, Antigone 675f.)
Spanish (DGE)
-οῦ, ὁ
lat. antesignanus, portaestandarte Γάϊος Ἰούλιος ἀντισιγνανός IGLS 2132 (II a.C.).