βουλητέον

From LSJ

ἔτυχες εἰς τὴν μάχην ὑπὸ τοῦ στρατηγοῦ πεμφθεὶς → you happened to be sent into the battle by the general

Source

Spanish (DGE)

hay que decidirse a μαθεῖν Anaximen.Rh.1420b23.