Yes. Most watchmen, guards, and even professional warriors are "0-level men" (who use that 0-level fighter attack row). This includes, for instance, all those mercenaries you can hire (1E DMG page 30, 2E DMG somewhere in there).
AD&D 1E DMG, page 30: "Note that regular soldiers are 0 level men-at-arms with 4-7 hit points each." Serjeants are 1st-level fighters, lieutenants are 2nd-3rd level fighters, and captains are 5th-8th level fighters.