foot soldier

a person who does very hard or dull work he's been a foot soldier for several environmental organizations over the years Synonyms dogsbody [chiefly British], drone, drudge, drudger, fag, slave, grub, grubber, grunt, laborer, peon, plugger, slavey, slogger, toiler, workerRelated Words workhorse; coolie, serfNear Antonyms goldbrick, shirker; drone, idler, lazybones, loafer, slouch, slug, sluggard