A/N: here is the next chapter you all been waiting for hope you enjoy.
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(Previously)

As they see the red part which is the South of the Empire slowly getting smaller.

Y/N:my army along with Artoria and Gilgamesh army is helping to reclaim your lost land Nero.

Y/N explainer as Nero thank him at this and ask if there is anything that she could do to repay him as Y/N merely shook his head at this as he just wants to help her as this made her fall in love with him even more

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(Continuation)

All of them look at the holo-map that fight infront of them as Y/N took out a sunglasses from his pocket.

As the other all where confuse as to why he wear it.

That is until they saw him pressing a button on the back of his sunglasses.

That it suddenly turn red with a black round circle with rectangles attach to the circle.

Y/N: all of you should wear this.

Y/N: said as he then snap his fingers and several sunglasses appeared.

All each appeared on the hands as they were amazed by its design.

Maria: oh what are this they look very special.

Maria asked as Y/N chuckle at this however Gilles knows completely what this are.

Since he has been promoted to be a Imperial Marshal only a rank lower to Walter.

He has read all the necessary thing about being a Imperial Marshal.

As he has reads aout the glasses that he is holding right now.

As he has used this yesterday when they were saving Gilgamesh kingdom from the controlled Tiamat.

Gilles: this are Communicator Command Glasses or CCG for short.

Gilles said as Y/N was impress at this as he was not wrong on promoting Gilles as an Imperial Marshal.

Y/N: I'm impress you mannage to know about it Gilles.

Y/N said with a smile as Gilles scratch the back of his head at this.

Gilles: many thanks your Majesty it is my duty to memorize everything about the things I need on my current rank now.

Gilles said as Y/N nodded at this as he turns around to look at Jalter.

Y/N: I now understand why he became your most strongest Commander Jalter.

Y/N said as he made a glass of wine appear on his hand as he took a sip from it.

Jalter: yeah and I am proud of my own friend to be able to fulfill his dream.

Jalter said as they all then wear the CCG and then turn it on.

There whole view was at first looks normal with only there view decreasing on how bright it is in the room.

As it dim a bit from when they wear it.

But once they all tunr on the CCG several holo-screen appeared on there view.

Nero: this is amazing.

Nero said as she waves her hand as she accidentally press a nuclear strike.

And a bunch of demons that were retreating on them map were suddenly hit by a nuke.

Walter then appeared infront of the other empty table.

As this surprise all of them as they all then greeted each other as they haven't seen each other for a while.

As they all the turn there focus at the task at hand of reclaiming the lands of the Holy Roman Empire.

Walter: Y/N did you launch a nuke just now?

Walter asked as Y/N shook his head at this as he points to Nero.

Who blush in embarrassment at this as the others all look at her.

Nero: sorry that was an accident.

Nero said as Walter just chuckle at this as he then spoke.

Walter: I don't think that was an accident at all you just mannage to help us clear a path faster to the city of Rovel.

Walter said as this made Nero dumbfound when she had heard this.

Y/N: it doesn't matter if it was an accident or not atleast you help the soldiers.

Y/N said as Nero smiled at this as the all then look back at the holo-map that is infront of them.

Rose: we have now occupied over more than 65% with 8% thanks to Nero who made the occupation faster there is only more than 35% left that we need to recover.

Rose explained as they all nodded at this as they look back at the map.

Y/N: what about any resistance that take our forces to occupy?

Y/N asked as Rose wave her hand and the map zoom to a battle some where undead doesn't stop increasing.

Rose: we have trouble on getting pass here.

Rose said as she points at the mountain hill that is occupied by several undead

Artoria: the undead seem to never stop increasing it gives are troops a hard time to occupy all of them.

Artoria said as they all look at the mountain that is being bombarded.

Siegfried: there is an underground fortress on that mountain perhaps they have some kind of device that continue to produce the undead and hidden there that needs to be taken out.

Siegfried said as he made the holo-screen zoom into the mountain.

And began scanning the underground of the whole mountain.

And a red glow appeared as it shows a room that has several undead walking out of it.

And a huge tower that is radiating a huge amount of mana on it.

Bedivere: well done Siegfried it seem you are right but what is that tower anyway?

Bedivere said as he congratulate Siegfried and then ask about the tower.

Erishkigal: it's a hell tower.

Erishkigal said as everyone all turn around and look at Erishkigal.

Enkindu: you know what this tower are?

Enkindu said as Erishkigal nodded at this as she then spoke.

Erishkigal: yes this tower were seen in the Underworld mostly use by the demons I prison there to use as a transportation.

Erishkigal said as the other all nodded in understanding at this.

Natasha: there seem to be some canals connecting to the underground fortress.

Natasha said as it shows several underground canals that leads to the city that there forces have reclaimed.

Y/N: it seem the canals are filled with methane gas we could burn it up to destroy the hell tower.

Y/N suggested as they all thought about it.

Maria: wouldn't it just blow the city as well.

Maria added at this as the other nodded at this as the holo-map shows that the canal connects to the city also.

Mordred: not unless we out a barrier on the main canal that leads to the underground fortress.

Mordred said as this made the other all nodded in agreement.

Gilgamesh: that could work.

Gilgamesh added this time as Y/N then tunr to look at Walter.

Y/N: do we have any defence barrier on the city if Beroy?

Y/N asked as Walter nodded at this as several Sentinel Knights where all walking above the canal.

Walter: yes we could infrom those soldier to deploy the a barrier and a remote fire grenade on the main canal.

Walter said as Y/N nodded at this as he then contact the soldiers.

They all see them running into the sewer canal below.

And set up the barrier and the remote fire grenade.

Alexandria:the barrier and the bomb has been set up now.

Alexandria said as they all nodded at this and Y/N gave the command to detonate the bomb.

The soldier holding the detonator press it as the bomb explode.

And the methane gas lit on fire and then exploded out of the ground.

As several undead were caught by the fire and it slowly went straight towards the underground fortress.

And it reach the canal filled with lots of methane gas in it as it lit up on fire.

And immediately exploded with the whole hell tower being destroyed and immidietly the whole underground fortress exploded.

Nero: it work the undead seem to be decreasing now.

Nero said as the other all smile at this as they unzoom and return back to showing the map of the whole Holy Roman Empire.

Walter: it seem you all can handle the main from me and the others have to go an handle the other coastal cities.

Walter said as Y/N nodded at this the girls bid there goodbye at Y N before they all then disappear.

Leaving only Y/N along with Nero an Jalter and the rest that are within the meeting room.

Y/N: the occupation will be complete within a matter of 2 hours.

Y/N said as it was due to the heavy resistance that there forces are currently experiencing right now.

The undead number were huge since there were Billions.

Not to mention how many tall mountains that are in the South of the Holy Roman Empire.

Making Tanks and other vehicle to have a hard time to cross.

Gilles: are tanks will have a hard time to be able to pass the mountains.

Gilles added as he knew the tanks are built terrains like forest, rivers, dessert, plainlands, hill, and jungle.

But there mobility in mountains would decrease a bit at this.

Y/N: we should send the 56th Mech Division to handle the enemies on the mountains and the tanks to handle those that are on the forest.

Y/N ordered as Gilles nodded at this as he follow what Y/N had told him.

The image shows of a new city which is heavily fortified one at that.

Nero: wait is that general Ingrave?

Nero asked in shock as to see one of her generals betraying her and siding with the enemy.

Y/N: it would seem he sided with Rianna army.

Y/N said as the others were angry at this while Siegfried was actually piss.

Siegfried: well I didn't like him much anyway since he's a pervert.

Siegfried said in disgust as Nero and Maria agree with him.

As out of all of Nero general Ingrave was the worst of the all as he already try to do perverted things to various young maidens.

But luckily Siegfried men would do everything to protect this maiden from the man they are seeing here right now.

Maria:I wonder what this do?

Maria wonder curiously as she picks a sign that actually show to launch several Moonlight Cavalier to attack.

As she the drags it to the field and press the bombardment cavalry formation.

Y/N: you are gojng to bombard the city?

Y/N asked as Maria nodded at this as they all look at the 500 million Moonlight Cavalier facing against 20 billion Undead that are defending the massive city.

Da Vinci: the cavalry is outnumbered several folds.

Da Vinci said as the other except Gilles and Maria as they knew that number doesn't matter as Y/N chuckle at this and spoke.

Y/N: why don't you look more closely Da Vinci.

Y/N said as Da Vinci and other look closely and there eyes widen when tht saw on what Maria is planning.

One of the leader that lead the cavalry that is now deployed infrom Maria that the troops are ready.

Maria: open fire.

Maria said as she press a button that signals to attack.

As they then see on the holo-map that zoom on the battlefield and see the Moonlight Cavalier all fired there Railguns.

Lily: the Moonlight Cavalier have cannons on there mounts I didn't expect that.

Lily said in surpise as the others agree at this as well.

The image now shows the undead slowly decreasing in number and befire they know it.

2 billion undead were the only thing left on the now ruined city.

Nero: oh well we could just rebuild the city back with are super restoration runes.

Nero said as they then see the Moonlight Cavalier charging towards the city as some flew up to intercept flying undead units.

Maria: this is taking to long.

Maria said as she saw the undead decreasing within just a a minute.

And only more than 900 million were left.

Gilles: looks like the coward is a commander is retreating.

Gilles said as he then joined in and made one of the Paris Class Destroyer to fire on Super Gravity Railgun Shell.

As the said ship fired a shell that flew towards the retreating commander.

As the attack misses hitting the commander and plunge to the ground instead.

Siegfried: you miss hitting the traitor.

Siegfried said as he was expecting that it would hit him as Gilles only smirk at this.

Gilles: oh did I?

Gilles asked as they all look back at the holo-map and they then see the whole ground exploding.

And a huge explosion of fire burst out of the ground that burn the traitor to death along with the remaining undead army he had.

Y/N: never underestimate a Super Shell from a Paris Class Destroyer.

Y/N said as he took a sip of his wine and took out a holo-chest piece that has a dragon symbol on it.

As he put it infront of another city that is several thousands of miles away from the destroyed city.

Y/N: now to deploy the Imperium Dragon Knights.

To Be Continued.
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A/N:that is all for todays chapter hope you all have enjoyed I'll see you all next time Author Out.