i Register
In some senses, marcher is marked as historical. Watch for register when choosing this word.
noun
An inhabitant of a march (border country); specifically, a marcher lord.
A border territory, a march (now only in (attributive) use).
Here is a scene of the marcher state of which they were margraves being turned into a duchy under Henry II Jasomirgott, who has made his capital at Vienna.
noun
One who marches; one who participates in a march.
Mr. Nelson covered the Selma-to-Montgomery freedom marches, including Bloody Sunday, on March 7, 1965, when 600 marchers were attacked with billy clubs and tear gas.