These paper models are the Ultramarines and Luna Wolves (Sons of Horus) Dreadnoughts, based on the game Warhammer 40K, the papercraft was created by Patoroch. There are other Dreadnought paper models at the site:
Warhammer 40K – Dreadnought Mk I Free Paper Models
Warhammer 40K – Chaos Dreadnought Walker Free Paper Models
Warhammer 40K – Mk IV Furioso Dreadnought Free Paper Model
Warhammer 40K – Ultramarines Dreadnought Mk. V
Warhammer 40K – World Eaters and Blood Angels Dreadnoughts
Warhammer 40K – Chapter Dreadnought Free Paper Models Part 1
Warhammer 40K – Chapter Dreadnought Free Paper Models Part2
Warhammer 40K – Dark Angels and Alpha Legion Dreadnoughts
Warhammer 40K – Dreadnought III Free Paper Model
Warhammer 40K – Imperial Fists and Death Guard Dreadnoughts
Warhammer 40K – Iron Hands and Iron Warriors Dreadnoughts
Warhammer 40K – Raven Guard and Emperor’s Shields Dreadnoughts
Warhammer 40K – Salamanders and Word Bearers Dreadnoughts
Warhammer 40K – Space Wolves and Thousand Sons Dreadnoughts
The Ultramarines are considered one of the strongest and most honoured of all the Space Marine Chapters in the Imperium of Man, and were responsible for almost single-handedly holding the Imperium together after the Horus Heresy. Highly disciplined and courageous warriors, the Ultramarines have remained true to the teachings of their Primarch Roboute Guilliman for 10,000 standard years. The Ultramarines were originally the XIII Space Marine Legion before the reforms that initiated the Second Founding and reshaped the Imperium after the Heresy on the orders of Guilliman himself.
The name "Ultramarines" is a nod to both the Chapter's standing amongst the other Space Marine Chapters and their role as the source for the gene-seed of more Chapters of Astartes than any of the other former First Founding Legions combined. The culture of the Ultramarines is loosely themed upon the culture of Old Earth's ancient Roman Empire, as exemplified in their Astartes' pseudo-Latin names and their strict adherence to the Codex Astartes, as well as the society of their homeworld of Macragge and the Chapter's method of recruitment. The Ultramarines directly rule the sector of space in the Eastern Fringe known as Ultramar as a fief of the Imperium and their Chapter Master is also considered the Lord of Macragge and the Master of Ultramar.
The Luna Wolves (Sons of Horus) were the XVI Space Marine Legion raised by the Emperor of Mankind on Terra at the dawn of the Great Crusade in the late 30th Millennium. After the Emperor discovered the Legion's Primarch Horus on the world of Cthonia, and gave him command of the Luna Wolves, Horus went on to lead the XVI Legion in earning thousands of battle honours over the span of the 200 standard years of the Great Crusade. Few other Legions could match their achievements and of those that could few could rival the XVI Legion for the brightness with which their victories shone. Spread across hundreds of Expeditionary Fleets and on countless battlefields, the Luna Wolves broke the enemies of the Imperium and pushed the Great Crusade forwards. The position of Horus as the Emperor's favoured son undoubtedly enhanced their triumphs. The Emperor fought alongside all of the Primarchs, and led all of the Legions at different times, but Horus and the Luna Wolves stood beside him for many of his greatest victories. The Luna Wolves stood with the Emperor from the beginning of the Great Crusade until the Emperor's return to Terra following the triumph of the Ullanor Crusade and the elevation of Horus to the esteemed rank of Warmaster and commander-in-chief of all the Emperor's vast armies. yet the character of any Legion was an echo of their Primarch, one can see the flaws of the father in the pride of his sons. Brutal, ruthless and unwavering but also honourable, and once loyal beyond question, the history of the Luna Wolves is the history of the ambition of the Imperium itself, and the flaws that broke its founder's dreams of unification and glory for all Mankind asunder.
The XVI Legion was originally known as the Luna Wolves during the Great Crusade. In honour of Horus' great achievements during the latter years of that era after the Imperial victory over the Orks during the Ullanor Crusade, the Emperor suggested that the Legion be renamed the "Sons of Horus" to honour his most beloved son's accomplishments. Horus at first refused, fearing that to so set himself above his Primarch brothers would lead to factional strife, but he eventually instituted this change following his conversion to the service of the Dark Gods of Chaos on the world of Davin. After Horus' treachery and final defeat at the Battle of Terra during the Horus Heresy, however, the XVI Legion was renamed the "Black Legion" by its new Warmaster, Abaddon the Despoiler, the former First Captain of the Legion and commander of its elite 1st Company. The new name was chosen after the Astartes of the Sons of Horus painted their Power Armour black in grief at the death of their Primarch and shame at their failure to overthrow the False Emperor and seize control of the galaxy in the name of the Ruinous Powers. [Source: wikia]
You can download the paper craft model here: Warhammer 40K - Ultramarines and Luna Wolves Dreadnoughts [Copy] [Box] [Gavitex]