Battle of Manehattan, day six.
Ahriman's POV

As the days had gone by, the Solar Empire soldiers proved more resilient than most. After four days days, with many losses, we had managed to push them back into the keep, which they then proceeded to withstand many assaults for two more days, awaiting for reinforcements. We needed to finish them now, before their allies could send aid. They had somehow even managed to create a spell that could block all forms of Warp energy, including Khârn for some reason. And believe me, he has tried getting in. Many times.

I sighed as I studied the map. The commanders of the Lunar Guard, which had been renamed to simply The Legion, had gathered for a meeting to discuss the next course of events.

"...With many assaults failing, we do not believe that we can sustain any more losses. Therefore, I request a retreat." General Forefeather finished, returning to his seat as he did.
"Denied, Forefeather." As he rose again, I raised my hand before continuing. "While I agree that we are losing far too many good soldiers, I believe we are close to cracking them. My fellow Librarians have nearly come up with a solution to the enemy barrier, to which I will send the full force of the Warp upon them. I have captured a many of the Solar Guards soldiers for just this thing." I told them, causing them to shudder.

They had all heard of, or seen, the results of my powers. When I asked for captured Solar Guard soldiers, they knew what I wanted to do with them. Some had tried to stop me, but all resulted in failure, as well as a few MIA reports being made.

"So, on the Dawn of tomorrow, when they feel their strongest, we will break their foolish barrier, and crush they're hopes flat. Each of them, except Khârn, gulped, then nodded. Khârn just nodded. "Very well." I then rose from my seat and exited the room, leaving them to dis cuss the coming day.

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Khârn's POV

As I exited the command center, I walked over to the 45th Company barracks. As I opened the door, I was greeted by a drunken party in full throttle. I stood at the door for a moment, then cleared my throat. Immediately, every movement in the area stopped, everypony barely even breathing.

"45th company! As you are aware, tomorrow will lead the possible final assault on Manehattan." There were a few cheers, but mostly everypony just listened. "Unfourtunately, you guys will not be accompanying me. The only ones who will assault will be me, Zhufor, and Ahriman, along with his band of Librarians." The mood immediately dropped at that. One of them raised their hoof.
"I though you guys weren't able to enter?" She asked. I nodded.
"That's true, but the Librarians are close to removing that barrier. Then, as quoted by Ahriman, 'We will unleash the Horrors of the Warp upon them', though not those exact words." I replied, standing straight as a flagpole as I imitated Ahriman. That gained from snickers from the crowd.

"So why can't we go in?" The soldier from before asked.
"For one thing, we are trying not to suffer any more losses. As for the other thing.... we don't want to expose inexperienced minds to the nature of the Warp. It's madness for a pony to do that." I told her, to which she just nodded. "Any more questions?" I asked. No one raised their hooves. "Good. I'll see you when the deed is done." With that, I left, leaving them to continue their party.

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Later, at Dawn.

As the three Chaos Space Marines, as well as the group of Batpony Librarians, marched forward, the Solar Guard soldiers manning the defences laughed at the puny force, expecting them to surrender. Khârn smiled.

"Alright Ahriman, do your stuff so I can bust in there." I told him, to which he nodded, and motioned for the Librarians. As they all surrounded Ahriman, Zhufor ran back for the prisoners. The Solar Guard watched on, interested in what the massive metal giants were planning. After about five minutes, the large group of POW soldiers came forth, led by Zhufor. Most of the Solar Guard troops at the walls gasped at their condition. Where some had cuts, others had bruises and other things. But upon each was the mark of Chaos, implanted where their Cutie Mark had once been. The Chaos Marks glowed with unnatural power, and it hurt for the ponies to look at. After another ten minutes, Ahriman stood.

" It is done." He said, right before a bone rattling scream echoed throughout the keep as the Unicorns tasked with keeping up the barrier died in many gruesome ways. The Librarians immediately went to work on the prisoners, and one by one, each turned into a pony shaped Bloodletter. The Solar Guards gulped as they bear witness to these horrors. I smiled.

"BLOOD FOR THE BLOOD GOD, SKULLS FOR THE SKULL THRONE!" Both I and Zhufor screamed before charging at the gates, followed closely by the pony bloodletters. As the guards took up battle positions, the strange beating in my head resounded once more. I ignored it as I charged forth, and smashed through the gate. The keep was immediately flooded with Deamons, and the poor souls close enough to hear the doors get torn to shreds by my massive bulk were immediately overwhelmed by the bloodletters, who tore through them like flies. Then guards who came down from the guard posts were next, each one torn to shreds as the bloodletters fanned out, tearing into Ponies quickly and efficiently. As the commander of the Guard stepped out, he screamed at what he saw. I promptly stepped up to him, then proceeded to headbutt him, which just so happened to crush his skull. Some of the Ponies tried to surrender, but to no avail, as the Deamons had no knowledge of the word 'mercy'.

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Solar Guard POV

As the strange abominations tore through the rest of the forces, me and a group of survivors hid in the basement. As some of the monsters passed, I used my magic to capture an image, before turning to one of the last surviving unicorns.

"Write a letter to the Princess. Tell her what has happened here." As I said this, I handed her a paper and quill, as well as some ink, then projected the image that I captured onto the paper. The Mage quickly scribbled down on it, then used magic to turn it to dust, which flew off to the Princess. I sighed in relief. Now they could at least be prepared for the Horrors they faced. Then the monsters found us, and we tried every weapon available to destroy it, but to no avail. Every spear stabbed it, but it kept coming, claws erupting from its hooves. It then proceeded to tear into us, and the last thing I saw was the Horrors face.

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Celestia's POV

While I was at the planning room, a letter popped into existence right in front of me. I smiled, hoping it was word that somehow the ponies of Manehattan had beaten back the Lunar Rebellions forces. What the letter entailed, however, was far worse than anything I could have imagined.

Dear Princess Celestia.
We of the Solar Guard ordered to protect the City of Manehattan have failed. They beseige us for days, and we even managed to cook up a spell to use to keep out thsee 'Warriors of Chaos'. However, at the final battle, they broke through the barrier, somehow killing all the Unicorns skilled in the spell. Then came the monsters. These horrundous, Pony like things, born from our own imprisoned guardsponies. They tore into us like paper, and even now I know they will find us. I pray that Faust will protect our souls from these.... demons. Below is a picture of one of the monsters. Good luck in the future, Lady Celestia. You need it.

The image of such a horrid creature caused me to yell in fear for but a moment, to which I calmed down, and slowly looked to the commanders.

"My faithful subjects." I started. "Manehattan has fallen."

Author's Notes:

And there ya go! I hope you all enjoyed! The Battle of Manehattan is over, on the Dawn of the Seventh day. Now, Prepare for the final battle that is soon to come!
Please notify me of any spelling errors!