What is the meaning of archistratege?

From a literal standpoint, "archistratege" appears to be the combination of two ancient Greek Words: ἀρχι (archi), which means chief, first, or primary (as in archbishop or archangel); and στρατηγός (strategos) which means general or more literally, army leader. Thus, "archistratege" would mean "First General" or more euphemistically, "Supreme Commander." This title is consistent with Michael's role as leader of Heaven's armies.