It is the 41st millennium for more than a hundred centuries the empress has sit immobile on the golden throne of eqqus. She is the master of ponykind by the will of the gods. And master of a million worlds by the might of her inexhaustible armies. Greatest among these warriors are the space mareines gene forged warriors who fight in her name.
To be a pony in these times is to be one of trillions. Forget the promises of friendship and understanding. Forget progress and innovation. For in the grim darkness of the 41st millennium their is only war.

The ultramare sector
M 4978
Planet Faradia
Artillery screamed overhead and the Crack of lazguns sounded as beams of red energy crossed a barren field. The wrecks of applejack tanks and chimeras littered the area. The corpses of guradsponys were everywhere many with wounds that hurt to look at or burned with blue fire. This world was under assault by the forces of chaos a chaos warband of Trixies daughters specifically. The one eyed mares marines had ripped holes in the materium and were in the procces of turning this world into a demon world. This would not stand for the daughters of fluttershy would not let it.

A red thunder hawk soared over the field the symbol on its side a butter yellow pair a wings with a red drop of blood in the middle. Inside battlesister rose thorns watched as her sisters readied themselves for the fight ahead. Sister true strike did last minute checks on her stalker bolter. She was their squads best marksman able to hit a Gretchen on a trukk from multiple kilometers away. She saw sister storm wing who is their squads heavy gunner her heavy bolter lugged on her side servo arm holding it in place. The downside of this powerful weapon was that she had trouble flying with any swiftness. Sister honed mind who was her squads librarian identified by her having a horn as well as her wings was reciting mantras and holy prayers to the empress and primare to shield her mind from the immaterium. She was the only one of their squad to not have a chainhorn as she had no need for the false horn as she had one already.
Rose herself was checking her standard bolter and reciting prayers to the machine spirit in the gun and in the servo arm on her shoulder. This servo arm allowed her to hold and fire the weapon. She donned her helmet her pinkish white hair and red eyes disappearing under a red helmet.

She felt the connection to the servo arm and chainhorn come online. She gave it a few revs to test it feeling the vibrations rumble through her head. She also gave the servo arm and the bolter attached to it some movements and sent the command to rack the bolt back and load the gun. She was ready to battle.

She grabbed her squads attention with a stomp of her armored hoof. They all turned to her as she gave a recap of the mission.
"all right sisters you all know our mission. The foul daughters of trixie are trying to tear open a rift in the materium. If this were to happen a warp storm could consume this system and all systems in a 1000 lightyear radius. This can not be allowed to happen. We are to assault their fortress and stop this ritual. FOR THOSE WE CHERISH she yelled WE DIE IN GLORY her squad yelled back."

The thunderhawk came upon the fortress as the assault was in progress. Thousands if not millions of guardsponys were charging the walls with applejack battle tanks and chimeras and dozens of other types of vehicles were assaulting this foul structure. They were accompanied by 11 other thunderhawks each one with their own squad aboard. They had to stop this ritual.

The aircraft opened up with its four twin linked heavy bolters witch tore through the cultists on the walls turning them into red mist as the two lascannons opened fire targeting any groups of traitors or chaos mareines. It's battlecannon roared destroying anything in its sights as rose and her sisters jumped from the open door and glided down to the fortress.

Rose saw as true strike started firing her stalker bolter every shot hitting a head or a limb never missing a single shot. She saw as honed mind fired her bolt pistol and used her chainhorn to rip cultists to shreds saving her power for the real enemies. She saw as storm wing opened up with the heavy bolter into groups of mutants and abominations its heavy DakkaDakkaDakka resounding through the fortress. She herself opened fire with her bolter every shot precise and deadly.

Dakka a cultists head exploded. Dakka a mutant suddenly lost its torso. Dakkadakkadakka every shot dealt death.
They tore through the fortress nothing able to oppose them.
Cultists were torn to shreds none had the firepower to take them down.
They finally came upon the inner sanctum and the sight of the ritual.

The inner sanctum of the fortress was a blight on the universe. It had colors that should not exist swirling around and a geography that did not make sense. They saw the massive rift that was growing and the center and the blue and white armored form of a thousand daughters chaos mareine.

"Ahh the daughters of fluttershy come to stop my ritual. Admirable but futile as you are too late.

Honed mind suddenly gasped and turned to me shock and horror clear in her voice.
"she is right i can feel it the barrier between the immaterium and the materium has been weakend too much. We are too late to stop it we must evacuate or we will be swallowed by the rift."

We began to make our escape but we were cut off by 4 other chaos marines.
The socceror laughed and said
"Not so fast your not leaving just yet are you? I dont think so not if i have anything to say about it. I am oof!" suddenly she was cut off with my hoof hitting her face. She clearly had not been expecting to be interrupted while she monolouged
"Go i yelled to my sisters i will cover you." true strike and storm wing looked to protest before honed mind grabbed them and ran.
Though not without a salute before they left.

I tuned to the remaining 4 marines and sorcerror. I revved my chainhorn and charged takeing flight to attack from above.
These were clearly just rubrics as they were completely silent and gave no indication of pain when I hit one in the flank with my armored hoof. I fired my bolter into the chest of the one I had stunned with my hoof and it's chest exploded. Revealing nothing but dust and residual magic.
I decapitated another and blew the third ones head off. The rift was growing ever larger and more unstable as I put my hoof through the chest of the last rubric and turned my attention to the sorcerror.
.
.
.
Who had disappeared while I was distracted. Sigh the daughters of trixe are always cowards. But the rift seemed to have reached critical mass as i was starting to be pulled in. I desperately tried to escape by flying but I was just pulled in faster with no ground to hold on to. As the rift consumed me I hoped my sisters had escaped to live another day as that was all that mattered to me. I closed my eyes and braced myself as everything went white.

To be continued

Author's Note

Hello this is the first story I have ever written. A while ago I saw a story that had a similar premise to this one but that story seemed to dissappear.
I took it upon myself to write something like that story.
I am looking for a beta reader and constructive criticism is welcome