Hyrkan

The People of the Pillar traveled very far from their original Orcish homelands of the Ashplanes and their creator, the Fire God, Kartas. Originally starting out as a small band of heretics, these Orcs broke taboo by shunning the wrath of fire and embracing the nourishment and purity of water. One day, under the cover of darkness, this now sizable band of water worshippers broke free from the Ashplanes and sailed as far away as they could manage.
               It was here that they landed in the unhospitable, arctic land of Hyrkan. The heretics then arranged themselves into a traditional Orcish structure. Family council. Each house with one vote. They ventured into the frost, unfamiliar with the territory, and faced substantial difficulties. However, the people remain pious, and miraculously, they found a well of water that is simultaneously vivid, blue and clear deep underground. Despite their suffering, no mortal mouth has ever drunk from this well of magical water. The water was revered, and here, the orcs constructed a large temple. Outside, the temple is tall, plain and imposing, stretching over the landscape. The people call this the Pillar and themselves the People of The Pillar.
               The People of the Pillar are semi-nomadic. Their religious and cultural sites remain the same, but they are a hunting and horse-riding culture, and they are used to covering long distances in a day. They are experts at this landscape and have adapted well to life in a harsh terrain. In fact, they appreciate the harsh terrain, as their main concern as a society is to stay hidden from the outside world. The People of the Pillar are afraid of the other Orcs discovering them. 
               To remain hidden, the People of the Pillar has evolved a specialized form of scouting and horse archery combat. Both military and religious training are mandatory per family, and every family owes at least one child to each. The horse archers of Hyrkan are incredibly tough, very disciplined and physically imposing. They are religious zealots sworn to protect to secret of the magic water, and will gladly die to protect it’s existence.
               These warriors follow a singular code, as do all People of the Pillar. The Tribal Code. Never mention your people, never mention your homeland, only leave your homeland for necessities, and always return. This code has only been tested once. The Carp sought to create a small village on the coast of Hyrkan, named Joy, to contact the orcs. The Orcs said no, pushed the Carp back into the ocean and tore their buildings down. This only has made the Carp want to try harder. The Orcs have kept their society hidden from the Carp for now, but who knows for how long.