Derivational etymology, referring to the role of Ares in the battle. It is provided for the derivative θούριος, and is also valid for the base θοῦρος. Formally, it implies the addition of /ou/ in the middle of the word. Semantically, it is rather difficult to understand. The scholion implies that the commander is shouting his orders to his troops. However, a derived meaning of θροέω is "to scare", and the etymology may have been designed with this meaning in mind: Ares could be the "scaring" one. If so, a copyist who no longer understood the meaning "to scare", but only knew the meaning "to shout", added an object τὰ ἐπιτήδεια