Countermarch

v. i.	1.	(Mil.) To march back, or to march in reversed order. [imp. & p. p. Countermarched (-m?rcht"); p. pr. & vb. n. Countermarching.] The two armies marched and countermarched, drew near and receded. - Macaulay.
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.

Noun	1.	countermarch - (military) a march in the reverse direction or back along the same route
Verb	1.	countermarch - march back along the same way
	2.	countermarch - change the order of soldiers during a march

march, process