The stormbirds decent in the sky it seems their primarch was right this structure was habitable it has landmass and ocean it could be populate my the millions or perhaps billion this structure is very impressive. 

"Alright brothers prepare yourselves were nearing to land if there's any lifeforms in here and they gave hostile kill them" said lucious his brothers nob in agreement they are ready in combat.

The stormbirds have land to the forest and begun to unload it's deadly passengers then the terminators and the Dreadnought have arrived they begun to search for any survivors.

luckily they land to less forested area. As they search they saw xenos they are ape-like creature wealding a some kind of hammer. From the looks of them they were not the survivors. They are clearly tall as them

"Demon" said of the xeno and they fired the ultramarines and theu clearly understand it and returned fire. "Who are these xenos?" said one the ultramarines to fire "Whoever these xenos are they clearly see us as a threat kill them all" One of the apes tried to attack them in melee but he is easily put down by the bolter fire.

then another swing his hammer to the space marine but he blocked it with his hand. The ape was has both surprise and shock to this new comer "What kind of demons are you!" said of the apes but he is killed before he take another action by firing a bolter in the head. 

The terminators begun to advance to the line of fire of the enemies they walked harmlessly as their Cataphractii and indomitus Pattern Terminator Armour and their shielding protect them. lucious was firing his plasma pistol rapidly none of these xenos armor can take it with a single fire they burned to their armor and flesh. The contemtor dreadnought fired it's conversion beamer to the enemy killing them by the dozens. The terminators firing their combi bolter- assault canon and conversion beamer killing the small creatures and bird-like xeno who wields a energy shield it take a small effort to destroy this shield but to those brutes who manage to close they were crush by their power fist and power maul they were cut in their power sword, and their power axe like they are just a paper and assault terminators do the same using their thunder hammer and their lighting claws.

after a 10 minutes of fighting of the xenos were died and to the ultramarines have none. They then continue their advance.

they enter a building they saw then the ape holding a woman and they saw a man along with a group of gigantic lizard xeno they think that they are ally. they listen to their talks.

they will only attack if the they needed a help. "The sacred rings... what are they?" the lizard said he talking one of the apes that holding a object that can talk. "Weapons of last resort. Built by the forerunners to eliminate potential flood host. thereby rendering the parasite harmless" when they hear it the ultramarines was shock this so called sacred ring were weapons of last resort against some kind of parasite or as they called it "The Flood". "And those who made the rings? what happened to then forerunners?" said by the lizard "After exhausting every stragectic option. my creators activated the rings. They and all additional sentient life in there radii of the galactic center, died... as planned." replied by the object "Would you like to see the relevant data?" the object continue speak then the lizard "Tartarus. the prophets have betrayed us" his voice was both anger and regret. the ape suddenly throw the object to the men. he force the woman to pust the button "No, arbiter the great journey has begun! and the brutes, not the elites, shall be the prophets escort" and then he lift his hammer with anger the building around them begun to move.

"Alright brothers prepare to fight those apes or the brutes as they call themselves shall be punish" said lucious he unsheathe his sword and it's activated it's powerfield it's energy crackling to life and ready for the kill. His brothers all ready their weapons.

The 2 groups fought while the ultramarines was still waiting. They saw the lizards have activated their energy sword. "IT's seems this xeno is much more advance than this human" said lucious. As the 2 groups fight They saw the one they called arbiter fight he fired his gun to the head of the ape killing it while this man is also good too he fired his energy gun to the ape's gun multiple times killing it.

The woman begun to stand but she has no weapons one of the apes were prepare to kill her. Lucius see this "Alright brothers it's now or never Attack with COURAGE AND HONOR" they follow him "COURAGE AND HONOR" they repeated their warcry in unison

The 2 groups were stunned by the arrival by this new comers to johnson he saw them a giant in human shape and they run fast as spartan. to arbiter this new comers were large as brute. to tartarus he saw them another demon but this time it's different they large as them.

As one of the brute nearly smash his hammer to the woman he was suddenly been rammed by one of these new comers he is shock for a how strong they are, Not even a those "Demons" can rammed him so strong in head on that it's impossible for them. he regained his self and he attack the new comer but did little did he know he will gonna regret it.

He swing his hammer to the blue armored warrior but he dodge it before the brute could ever react he is been torn in half along his hammer by their sword.

Miranda POV

Miranda who is almost killed by the brute she close her eyes waiting for her fate but suddenly she heard a loud noise with a metal boot she knew it was spartan was gonna saved but after she opened her eyes it was not a spartan but rather a giant in blue armored in human shape saved her they have an omega symbol and a double headed eagle

She saw him rammed that brute head on it is even impossible for the spartan can do, let alone against the brute. Then she saw him wielding a sword crackling in energy and a plasma pistol she could it that this being is a super soldier and maybe this is another version of a spartan that can able to fight and toe-to-toe with this alien. She saw him how he dodge the brute and a swing of his sword he cut the brute along with hammer in half like a paper.

And he is not alone they are more, Some of them have lager armor the though of her mind those inside of this armor were living tanks.

 She saw another brute successfully land a hit his hammer in full force to the new comer but instead there was a energy that protected him not even a spartan shield can handle that.

To those who coming against armored giants their big gountlet hands,swords,mace and other melee weapon walking to the line of fire while returning fire from their own weapons, the others have shield and hammers and claws all crackling in energy. 

"Are they came out of medieval era and scifi  stuff combined together to fight these brutes?" Miranda thought "Damm who are these guys?"

they dared foolishly to attack them they were crush the other were cut to pieces but to have hit their weapons have bounce off to his blue armored giants.

and another one this time it's robot one it's hand is plasma weapon but the other is simple hand "This robot must be powerful" thought of her mind The robot start firing his plasma weapon killing those who are unlucky enough to hit the blast but those who dared to attack the robot they were crush by his hand killing them instantly

Ultramarine POV

Lucious have come to challenge their leader the ape or the brute named tartarus. "I challenge you xenos!" shouted lucius he pointed his sword to the xeno within a moment both of them attack each other the brute smash his hammer, lucious side-step, the brute glared at him "You will going to die Demon!" the brute said swinging another from his hammer. "It is you who going to die xenos" said lucius fired his plasma pistol to the brute then he thrust his sword killing the brute.

Miranda took her opportunity and she goes to the device stopping the halo ring's activation.

After 20 minutes the fight was done Lucius heard their conversation "So there is another of this so called sacred rings" they were shock by his appearance "Who...who are you? are you another generation of spartan?" said by the woman she has awed to this warriors "Spartan? what is that?" said lucios.

 Miranda was shock to what he said "he doesn't about the spartan is? who are these people who claim they do not know about the spartan? he though to her self  "Then what are you? what organization are you in?" said Miranda. "We are the sons of Guilliman we are the Ultramarine space marine legion....(taking off helmet) And i'am captain lucius of the first company 5th chapter" said lucuis and they were from what he said Ultramarine space marine legion "A legion? that means you and your buddies have even more soldiers?" said johnson "Correct we have space marines" replies lucious "Currently we are only 30,000 and 1 capital ship it's our flagship" he continued. Johnson's eyes wide "30,000 of this super soldiers? impossible the spartans were only hundred but this guy telling them that they are many just how many? if they are only 30,000 then these guys were no joke" johnson thought

"And i see that you are allied with this xenos" Luciuos glared at the giant lizard "Yes we were allies but we are once enemies now it is no longer because our prophet have lied to us about the great journey" said by the arbiter "I see can i know all of your names?' said lucious "I'am commander Miranda keyes of the unsc" said by the woman "I'am Sergeant Johnson of the Unsc" said by the black man. "I'm thel'vadam But you can call me arbiter" said by the xeno "Alright then we need get of here earth is in danger" said Miranda "We will help you my fleet is ready' said by the arbiter "Then we will also help my Primarch will willing to help you" said luciuos "And you can also enter to our flagship my leader would like to meet you" the 3 nob. They are going to Macragge's Honor.