\Coun`ter*march"\ (koun`t?r-m?rch"), v. i. [imp. &
p. p. {Countermarched} (-m?rcht"); p. pr. & vb. n.
{Countermarching}.] (Mil.)
To march back, or to march in reversed order.
      The two armies marched and countermarched, drew near
      and receded.                             --Macaulay.

\Coun"ter*march`\ (koun"t?r-m?rch`), n.
1. A marching back; retrocession.
2. (Mil.) An evolution by which a body of troops change front
   or reverse the direction of march while retaining the same
   men in the front rank; also, a movement by which the rear
   rank becomes the front one, either with or without
   changing the right to the left.
3. A change of measures; alteration of conduct.
         Such countermarches and retractions as we do not
         willingly impute to wisdom.           --T. Burnet.