They say a great old evil lurks just beyond the light of the moon, trapped between the sun and stars. A militant force from ages ago set on a campaign of global conquest was forever lost to the world of light; be it from curse or course mischarted. No one can say for certain what force or misfortune sealed them away as they are- as is often the case with legends, living or otherwise- but what’s known to all who walk beyond the sight of the sun is to mind the moonless night, because once a month when the sky is darkest, the men of the No-Moon Army ride again. Clad in clankering articulated armor, their faces masked by hinged grated plates, the No-Moon Army appear from the moonless mists in full-supply, their horses scratching and their siege-engine squealing for fresh oil. A mobile and well-supplied force, the No-Moon Army is a force to be reckoned with, and while they have the practical tactical wisdom of centuries behind them, their greatest asset is the element of surprise.
When they walked freely under the light from above the No-Moon Army traveled far and wide, leaving their mark on every corner of the globe. Since their banishment the army only returns on nights when the moon is absent, and while this is predictable no one can guess where on earth they’ll appear next. Some months they appear in the unsettled wilderness, far from any civilization, but other nights they’ll storm full-force from the mists into the main street of a great city or into the front line of an exhausted battle, their great barbed tower shields deflecting opposition, swords and spears striking down those who stand in the path of their conquest. They fight tirelessly, and when one of their own is felled he will fade back into the mists, leaving no trace but the blood they shed in their wake. The No-Moon Army is an iron-plated force of nature, a storm of blood and steel that can appear anywhere, and those who’ve survived their encounter with this ghastly garrison never forget the night, their pitched battle relived with the coming of each new moon.