Source : Webster's Revised Unabridged Dictionary (1913)

Polemarch \Pol"e*march\, n. [Gr. ?; ? war + ? leader, from ? to
   be first.] (Gr. Antiq.)
   In Athens, originally, the military commanderin-chief; but,
   afterward, a civil magistrate who had jurisdiction in respect
   of strangers and sojourners. In other Grecian cities, a high
   military and civil officer.