Definition of countermarch
1 : a marching back; specifically : a movement in marching by which a unit of troops reverses direction while marching but keeps the same order
2 : a march (as of political demonstrators) designed to counter the effect of another march
First Known Use of countermarch
Seen and Heard
What made you want to look up countermarch? Please tell us where you read or heard it (including the quote, if possible).