The Collaborative International Dictionary of English v.0.48:

Battle \Bat"tle\ (b[a^]t"t'l), v. i. [imp. & p. p. Battled
   (-tl'd); p. pr. & vb. n. Battling.] [F. batailler, fr.
   bataille. See Battle, n.]
   To join in battle; to contend in fight; as, to battle over
   theories.
   [1913 Webster]

         To meet in arms, and battle in the plain. --Prior.
   [1913 Webster]