a march or movement that is opposite to or counteracts another march

परस्पर मार्च

English Usage: The soldiers executed a countermarch to avoid the ambush.

Hindi Usage: सैनिकों ने हमले से बचने के लिए परस्पर मार्च किया।

to march in a direction that opposes another movement

उलटा चलना

English Usage: The troops were ordered to countermarch after receiving new orders.

Hindi Usage: नई आदेश मिलने के बाद सैनिकों को उलटा चलने का आदेश दिया गया।