Here is a huge update for my 40K plans. I have made a homebrew system, from where my armies will be. Basically is a dual planet system. The one is named "Polean System" and the second one "Terminus System". Both are located in the Vulpecula constellation. In the 40K universe this is located to the Segmentum Ultima, after the Halo Stars. Today I will say the history of the Polean System.
The location of the two systems is in the red quadrangle.
The first system, is the Polean System. It consists of a large planet and its moon. Both are Death Worlds and have been colonized at the end of the Age of Technology. The moon (Polean Secundus) is a desert death world, whereas the main planet (Polean Prime) is a mixed death world, containing jungles, mountains and seas, all with very hostile fauna and flora. This is the place where the Polean reigment of the Imperial Guard. Both planets were colonized with a somewhat haphazard way. The colonisation ships crashed at the end of the Age of Technology, and critical systems failed as fights between the humans and the machines inside them broke out. The main force fell on the Polean Prime and the other ships on the Polean Secundus. Some small ships remained intact and stayed in orbit.
In Polean Prime there was an island, where the largest of the ships crashed, there was a huge explosion, obliterating everything there. Today there is the citadel of the planet and the place of goverment of the whole system. It is the only safe place in the Polean Prime but the place is not enough to become a hive city. The goverment, govermental buildings and the space elevator at the center are the main features that the island has. The rest of the planet is covered in dense jungle, at its end there are extensive Tundra regions and high mountain regions. The rest of the planet is covered in water, with many small islands around. Although the life on the islands is somewhat safe, the waters are full of dangerous fauna and flora and there are regular storms across the island regions. Huge ships roam the seas, where they are floating factories for processing the huge creatures that the fishermen of the islands capture. The people of the seas will be based on the Maori people and will have extensive tattoos in their faces and arms.
The moon, Polean Secundus, is a vast desert world. The people there have to fight huge insects and dangerous flying predators. The vast shallow oceans are extremely salty and they have no life. The moon mostly produces mushrooms and Mukaali meat, the latter millenia the use of Grox for meat has reduced the Mukaali meat production. The only drawback of these Grox is that they are almost blind, because of their staying in the cave systems where the people live, and they tend to be more aggressive than normal (they cannot see, especially in far distances) and every now and then they tend to do extensive damage to the undergfound settlements. There are also feral Grox on the planet, these are not blind and have scales and nostrils with filters
to better survive the desert storms. These, along with the Grox from the Polean Prime are used as cavalry for the Polean army.
As almost every Grox has adapated to the relative climate it was introduced, they have been specialized breeds and the Poleans use them as specialized cavalry. There are also feral Grox all around the place who tend to be more agressive than their herded counterparts. It is from these Grox that Poleans take their cavalry, each Polean has to tame one to become a full adult, as their final trial. The Jungle Grox has adaptive camouflage (like a chameleon) and hard scales, not as hard as the Desert Grox though. The Snow Grox is covered in heavy fur and is almost invisible to infrared radiation. Also it can fall in hybernation, the Poleans use the extract of these glands to their medicine.
Polean Prime and moon (Secundus)
The other main elements of the Polean System is the Velchanos Forge World, large gas giants and huge asteroid belts. Velchanos Forge Wolrd was colonized much later from the main planets and it produces many specialiazed variants of the Imperial tech. The huge amounts of materials from the asteroids and the gas giants are also extracted to other worlds of the Imperium. The Forge World and the mining colonies were created from the surviving ships of the remaining colonizers.
A very distinct feature of the Polean people is their tolerance of abhumans and psykers, As the system is located near an active pulsar, many mutations have been documented. Squats, Ogryns, Ratlings, Pelagers (Polean Prime seas), Víkangrs (very hairy men and with a huge posture, almost as a Space Marine, in Polean Prime ice deserts and mountains) and Nightsiders (space stations and especially to the asteroid belt at the far edge of the system). The psykers were the only way of communication in the first colonization years, as most-if not all-the communication equipment was destroyed in the crashes. This made them favorable among the population, not only on the surface of the planet, but also for interplanetary connection.
In Polean Prime there is an alien civilization and they have a love-hate relationship with the human population. They are in a primitive state and have shamanic beliefs, they are fiersome fighters and very good hunters. These will be based in one of my favorite creatures, the Predator. They are degraded in hunter gatherer people and living in threehouses, although the huge stone city remains in the jungle will be of their ancestors.
When the Imperium found again the system, the Poleans accepted them with great happiness and expected them for more than 10 millenia. As the system is very stable in faith and production, and its very large distance from major Imperial routes, the Administratum has left the system with a relaxed independence. They fought along the loyalist forces during the Horus Heresy and they believe that the Emperor is a paternal figure and their light, which somewhat is true as without the Astronimican light they will be cut off for once more from both Terra and the human species.
Another variant of the Polean System, wheeled Taurox truck
In the early centuries of the 38th millenium the Polean System saw an attack wave of an unkown xenos species. Near the system, on their long pilgrimage, there was a Space Marine force. They helped the Poleans to eradicate the xenos and then they stayed there as their watchers. They found many things in common with their normal human counterparts. The xenos species was not recorded again, until 741.M41, as the Tyranid species. Some Tyranids survived in the Polean system and have been in a feral state ever since the 38th millenia.
The battle doctrine of the Poleans is guerilla warfare with hit and run tactics. They are experts in almost every terrain, thanks to their multiple biomes. They prefer long range recons with their Valkyries and drops behind enemy lines, where in the front line the cavalry (Grox roughriders) makes diversion. For heavy support they use Basilisk artillery. They do not use many tanks, as the lack of many open spaces in the system makes them an easy target, but they use Hellhounds, Infernus tanks, customized Hades Breaching Drills with flamers, and tank killer tanks, albeit with limited use. They have some specialized variants of the Imperial Guard equipment, like the bullpup silenced lasguns, hellguns, hotshot lasgun snipers, some shotgun variants and the use of a compact las-smg. Some of their Valkyries are a different pattern with larger engines but they mostly perform the same as the standard variant. One of their most valuable machines is the Sentinel Walker and has multiple variations thourought the system, along with a very specialized (non combat) variant with hands that is used as a lifter and heavy exosuit in the asteroid mines. They can use grav-chutes, a thing learned from the high cliffs that are present thourought the Polean system and they favour explosives and demo charges. Sometimes they use specialized explosive or flamer shells in their shotguns or their grenade launchers.
The Space Marine force that helped the Poleans was the Equitus Austis Chapter, my homebrewn Space Marine Chapter. Their history will be told another time.
Any comment and critisism to my story so far is welcomed.