It has been a very long time since I wanted to do a Modern Military incursion into the Familiar of Zero World, Being in my head and old Ideas files I kept and forgotten about it now has finally come back and thus UN Peacekeeper will write here, a Rewrite of my Old fanfic lost in time and left out because Attack on Titan is darker and fun and still will be, but currently stuck as writer's block and loss of motivation so I decided to do something else in the time being as writing has become one of my permanent hobbies along with playing games and reading books.

This story is set for those who have watched the Anime (Don't know about the Light Novel as I have not read it and Anime is my source) and remember it at the beginning months of its 3rd Season when Saito (Spoilers alert, and our generic MC who is dense) had been resurrected by Tiffiana (half-elf) who becomes part of his Harem (Yes, and I HATE HAREM GENRE for some reason, though there are some exceptions) and back to Louise, this is the point of divulgence I am going to take and the story goes full A.U.

NOTE: Do watch the first two seasons of the Familiar of Zero anime to understand the FOZ side of the story and know the setting of this world and its form of tech and Magic and lore or my all good readers, ya all be confused. Or just read Wikia stuff if lazy.

(But for a safety measure I will leave a short synopsis on what happened before)

Now to the story but first a disclaimer to save me from Copyright and make me broke (again)

I do not own Familiar of Zero nor GATE: Thus the JSDF fought there, they belong to their respective owners.

NOTE: Thanks to Danny the Weeb from Wattpad for helping me (He is co-Author now as I thought I needed some big help in making this readable)

PROLOGUE

Halkeginia, Germanian Empire, Royal Palace.

Chaos, the entirety of the Courtroom was in an uproar. Arguments endured between the Pro-Union and Anti-Union parties of the Emperor's court. It was revealed that the Emperor of Germania, Albrecht Friedrich III, had signed a Treaty of Enns.

Under this treaty, peace between the Major powers was guaranteed, allowing them to focus on other endeavors, and limiting the economic strain of maintaining a Highly militarized border.

What was a surprise was the Union between the Germanian Emperor and the Princess of Gallia, Princess Isabella of Gallia. With blessings from the Pope himself, Gallia and Germania are now allies, and a new frontier would be opened in the Sahara, towards the holy lands for the Crusade against the vile elves.

The Emperor's words were final, and the arguments died down. There was no point lingering in the past, only to prepare for the close future. The news of the proclamation spread across all parts of the continent.

A military build-up began for the Crusade. Ten Legions, the largest number of Legions mobilized in History, were being prepared for the invasion, as it was the minimum amount of soldiers needed. Orcs and Trolls, the best shock infantry for Human waves, were conscripted and trained to be the brute force of the army.

Dragons, the aerial units of Germania, were also being mustered in numbers never seen before. The newest unit of Germania, "Musketeers", was being recruited and trained in large numbers. All this preparation was evidence that the Empire was getting ready.

Neighboring kingdoms of Gallia and frontier nobles from the kingdom of Tristain were observing the build-up. It was impossible to keep it a secret, as even hiding one legion was a mammoth task, let alone ten. In response to this and after receiving letters from the Pope and, Gallia started mobilizing its armies, however, kept the mobilized units as reserves to prevent any escalation and send in as reinforcements in the second wave, the Tristain nobles doubled their border patrols and started recruiting militias.

As the news of the crusade spread, Commoners, including many fanatical believers of the faith from all over the continent volunteered to form their Auxiliary Corps to assist Germania many of these units were led by fallen nobles who wanted to regain their lost honor by serving the faith and wanted their titles to be restored by the force of their arms and the blood of their enemies. Nobles, wanting to attain eternal glory of defeating the elves and reclaim the holy lands, all began to arrive at Germania.

It would take four months for the preparations to be complete, and now the Reclamation of the Holy lands can take place.

-[+]-

Halkeginia, Kingdom of Tristain, Academy of Magical Studies

Hiraga Saito couldn't help but smile as he laid down on the grass in the beautiful gardens of the academy reminiscing the time he had spent in this new world since his arrival.

He thought himself to be fortunate for not being isekaied by Truck-kun ramming him out of nowhere but by a summoning portal, bringing him here.

He also felt himself to be a lucky boy or familiar to be bonded with his current girlfriend/ Master Louise.

At first, when he got here he felt really weird and uncomfortable for a few weeks as he was literally a "Slave" for Louise as he was the only human familiar to be summoned in the summoning ritual while the other students got a lot of exotic animals for their own.

But the feeling eventually subsided as he started to enjoy his life here. All the adventures he went with her Companion, he met a lot of new people and made good friends on the way, and the new abilities he gained from the runes mentioned by the institute's headmaster as the Gandálfr powers which got magically inscribed on his left hand is basically a very powerful cheat to make the bearer of the rune to be proficient in using any weapon known to man. A dream any Otaku back home will want to achieve. The runes also bound him to Louise.

Those adventures with Louise brought them together and she stopped seeing him as a mere familiar but a real human and finally they started to like each other. Though it took him literally fighting a war, pulling a one-man army last stand, dying a slow death, those feelings still make him shiver and finally get revived by another good Samaritan, Tiffania. A half-elf who brought him back to life. For that, he was indebted to the girl. Made both of them realize their love for each other. He did momentarily lose his powers after revival but got it back after another summoning ritual by Louise.

He couldn't believe he had been living in this fantasy world away from his home for more than a year now and quite enjoying his stay, except for the dying part, he has made a girlfriend, is always surrounded by beautiful ladies all the time, has a talking sword as his companion and magical powers, what more any sane person who was average on his world could ask for?

Now thinking properly about it, he did not regret going above and beyond to protect her from a stuck up noble student who thought herself to be some form of an inquisitor and tried to burn the poor girl by forcing Tiffiana into a boiling pot to test if she was loyal to the kingdom or a spy for the elves.

He still doesn't understand the hate they have for the people whose only difference they have is pointy ears and live a bit longer.

Fortunately, before things escalated out of proportion, Lousie intervened disturbed by the commotion outside, and went on to blast everyone with her only proper magical ability to blow things up for ruining her sleep and went on to deliver some knowledge to the noble silencing her up.

At the next moment, Tiffiana hugged him as a form of gratitude, and Lousie being short-tempered and basically a tsundere, still mad went on to beat him with a cane and chase him all around the academy. He was able to escape and now is in hiding until his girlfriend calms herself down.

'Well at least I was not getting canned for no reason back home' He thought to himself when he heard footsteps coming towards him.

Saito sat up and looked back to see his close friend Siesta, a maid working in the Academy.

"Hey Siesta what's up, has Louise cooled down yet ?"

She nods with a smile. "Yes master Saito, she has called for you as it is already time for the preparations for the royal ball held in the Royal Palace."

"Oh crap !" Saito said as he stood up, "I have completely forgotten about that, thank you Siesta for the remainder."

He then started to bolt back to Louise's room in the academy.

After another short form of blasting and usual form of abuse for being late the couple along with other members from the school invited to the ball headed for the Royal Palace to attend it.

On the way, he finally gave a thought about his family back home.

'I hope you all will be proud of what I have accomplished and understand my decision on staying back here, but I promise next time when I get another chance I will return home and will Louise with me.'

He thought to himself as he gave a glance at Lousie.

-[-]-

Tristania, Royal Palace

Henrietta de Tristain, the Queen of this small but proud kingdom felt a sense of pride and happiness as she sat on her throne.

She had defeated the usurper Olliver Cromwell and his goons from the Reconquista and his so-called Holy Republic who murdered her beloved Prince Wales, the late crown prince of Albion and the last descendent of house Tudor.

They even planned on invading the entire realm and spreading their poisonous views of overthrowing all the monarchies and destruction of the world order as it is and replacing it by the government set by them and lead the reclamation of the holy land an unrealistic endeavor, they failed miserably trying to invade Tristain and were crushed to dust by the counter-invasion.

Though the victory was not achieved without losses. Many loyal subjects both nobles and commoners, lost their lives fighting in the foreign lands. The victory also wouldn't have been possible without the help from Germania and timely arrival of Gallia and the bravery shown by none other than Hiraga Saito, her best friend Louise Françoise's familiar who delayed the usurper's counter-attack long enough until reinforcements arrived.

For this feat of valor, she had bestowed Saito with the title of Chevalier de Tristain, raising him from a mere commoner to a noble and equal to all the noble houses in Tristain, along with gifting him the lands des Ornières for his and Louise's service to the kingdom.

As the celebrations went ahead and the Queen finally enjoyed some time with her friends the doors to the room were wide opened drawing the attention of the guests and the Queen.

A Germanian royal messenger entered the room, disregarding the ire of some of the guests as he cut right through the dance floor and headed straight for the seated Queen and bowed before her asking her permission to convey an urgent message sent by the Germanian Emperor.

The Queen didn't have any choice and nodded

The Message unrolled the parchment, took a deep breath and began to read it aloud to be able to hear him.

With the blessing from the Church of Brimir and his Holiness Pope Vittorio XXXII, the Great Germanian Empire under the command of Emperor Albrecht Friedrich III has proclaimed a crusade to reclaim the holy land from the Elves, the vile occupiers of the holy land and thus requests to all the human kingdoms to answer the call and send their best warriors to participate in this grand campaign and by the grace of the Founder, the allied might of our armies will soon cleanse the lands of its Elvish disease and will construct a great temple for Brimir our founder in the heartland of their capital.

Seal of Romalia

Seal of Germanian Empire

The Messenger rerolls the parchment

"His Majesty will be waiting for your response."

He bows before the Queen again and leaves the room as the entirety of the guests stood in silence, the Queen herself frozen on her throne.

'Another war is about to begin, even before the wounds of the last one have yet to heal' the young Queen thought to herself.

Refusing the call meant disobeying the Pope and the church, she quickly made up her mind and after a short apology to the guests and dignitaries present at the ball called off the celebrations and ordered the War Council to be summoned post-haste.

-[+]-

Arnus Hill, Saha Halkeginia, Germania.

It was a cool and cloudy day, with weather conditions being clear. These were the best conditions for soldiers to march under. On the top of Arnus hill, the "Gate" stood ominously. A faint blue light emitted from it, giving a slight warm feeling as well.

General Adalard von Kassel sat on his horse as he led his army which marched towards the Gate. He was confident for his army's future victories, with his army being the greatest out there.

It was a disappointment that airships could not be used, being that the Gate was on the ground and too small for one to go through. It was a disappointment in a way as King Joseph was unable to open a bigger gate.

He was still confident in the army. It had taken months of preparation to build up the army and he was even recalled as a General to lead the invasion.

He was happy, as he could lead the force for the liberation of the Holy lands, and his name would go down in the history books as the General who led the army towards victory. Who knows, he could even become a legend among the people.

He had gotten down from his horse and entered his personal tent when a messenger arrived and presented a letter with the seal of the emperor. It was directly sent to him from his majesty himself, and not from a mere courtier.

Within the letter, it was revealed that the lands beyond the gate were not elvish land as the mages predicted the gateway will lead to but rather a land inhabited by humans. Scouts were sent to gather information, and even some of the humans on the other side were brought back for more intelligence. Whatever Information that could be gathered regarding the other world was provided to him.

The Emperor had ordered that this information must be kept as a secret from members from other kingdoms and the clergy until a foothold has been established and a part of the foreign land conquered. The preparation had gone too far ahead, and recalling the armies would cause a great economic recession from the costs.

It was decided that Kassel would lead an expedition to the other side and proclaim it as the territory of the empire.

He was astonished. His duty was not reclaiming the holy lands, but to lead a conquest into extending the empire. He was still happy, as he could gain glory from the conquest. It is necessary for him now to lead a successful campaign in the new lands and only return if he achieves great success along with bringing riches in form of loot and tribute to fill up Germania coffers.

Later on, the General learned the reason why he was recalled. The previous General had refused to lead the campaign on the grounds it was not his way of invading an unsuspecting enemy and that too people those have nothing to do with the crusade, the people on the other side are also Humans not pointed ear devils it was not the way of the founder to attack innocent people not involved in their crusade and proposed to send a delegation instead. After repeatedly denying his Majesty's orders, he was deposed after being branded as a traitor and his land taken over and his family exiled. Kassel sighed as felt himself to be lucky enough not to choose the path of his predecessor, even though his honor as a noble said otherwise on the decision the Emperor has taken all alone and without the knowledge of his council which has become powerless in subsequent years since the current ruler ascended the throne. The fate of his predecessor also silenced any voice of opposition in the army, the fallen nobles mainly the ones leading the auxiliaries after being assured their titles to be restored and receive lands on the other side after the campaign is over and the land assimilated into the greater empire, very quickly the men let go of their fanatical ideals for holy war and let the basic human emotion of greed to take over their heart and mind. It did not take long for the fallen nobles and Germanian officers alike to galvanize their men enough by their own promises of loot and riches from the new world. There were still few who didn't support this campaign after its main purpose was revealed but they kept it to themselves unless they be branded as a traitor or worse a heretic to the faith.

Then the marked day for the attack finally came.

As decided the Imperial army and the Germanian Knight orders will lead the charge followed by the auxiliary forces consisting of poorly trained but well-motivated men from all over the continent.

In the year 6243 month of Nyo, day 28, Adalard gave a final pray to the founder for a successful campaign in his name and ordered his army through the gate and to the world beyond to be brought under the banner of the Great Germanian Empire of Halkeginia. Nobody then knew the fate that awaited them on the other side and the fate of Halkeginia to be sealed forever.

END

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