Definition of countermarch

• v. i. - To march back, or to march in reversed order.
• n. - A marching back; retrocession.
• n. - 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.
• n. - A change of measures; alteration of conduct.