βοὴν ἀγαθός
From LSJ
Τὸ γὰρ περισσὰ πράσσειν οὐκ ἔχει νοῦν οὐδένα → There is no sense in doing things beyond the usual measure
Greek to English
good at the war cry, good at the battle-cry, master of the war-cry, good at shouting
Spanish
bueno para lanzar el grito de guerra, valiente en el combate