I do not own Attack on Titan, all characters belong Hajime Isayama.

Year 845, a few minutes after the breach

Louis Walter had been a commander of the Arnoux Regiment for 5 years, chosen by the previous commander whom trusted him to serve for the regiment. He can say with positivity that he had done a decent job of it, the men got their supplies, the horrors outside never had a slim chance of getting close to the walls. At least, that was before the breach, when they promised to protect these walls from every threat and that means every threat, somehow, Marley got past the guard post stationed to warn and take out threats, as he land on the ground with his ODM gear, he still remember the news from the frantic runner.

Flashback,

He was perusing over his paperwork again, honestly a section commander's paperwork is already hard with training his section, now he has to handle logistic, data gathering and security of this entire regiment. Okay, this order for resupply of ODM gears and explosive was signed, that will be send tomorrow, as he was about to move to the next document, he was interrupted by a runner.

"Sir, sorry to interrupt but guard post 6 reported in that the warriors from Marley are here" the runner said breathlessly. He was immediately on his feet "Was the threat neutralized?" it is better to capture them but currently most of his forces are dealing with another wave so they don't have the numbers right now. The runner shook his head no, fear is settling in his stomach "They were four, one got shot by the guard and was eaten by a titan. The other three got away because the guard was interrupted by a chiv" well fuck "Call the men to fall back to B base, if the warriors break down the walls, we won't-" he never got to finish it, the atmosphere inside his office suddenly became thick and getting thicker to the point of suffocation before thinning and then an emptiness feeling spread through his whole body, it all happened in the span of a second.

His eyes wide in shock and fear as he look to a window in his office, there was a tearing sound before a bright green light and then an explosion of sounds. Those sound are screams and Louis saw a giant portal, a tear through air as it spits out mimics, these creatures are created by Folterers. This is bad, they will block the men returning from the battle, there is another route but the runners must make it to them. "Take as many runners as you can, tell them to fall back to B base" the runner quickly left after the message, B base is inside the wall and as long as there is only one hole we can hold them off. Jumping through the window he activated his ODM gear and landed safely on the ground, by the time he reached the defences, the creatures have already broken through.

End of flashback

Karl Kindl, is a section commander of the Arnoux Regiment and has been for 12 years his job is to provide the men from his section the best training he could possibly give them, considering his 21 years of service, he is one of the most experienced soldiers of the Arnoux Regiment. He was preparing a schedule for the recruits when they return from their holiday, it is after all what they deserve after growing up in the Underground, he was just about to send it to commander Walter when he felt the same thing, as well as the tearing in the sky, except he was closer to it.

"Shit!" Karl cursed as he activates his ODM gear going near the portal to hold off those mimics, other soldiers all around him also went to the portal, blades drawn to fight these creatures. The mimics are weak, poor imitation of skilled fighters and warriors of old but they can still fight, what makes them dangerous is because they come in swarms. Thousands and thousands of these creatures, to effectively fight them is to have a choke point, and A base is on an open plane, fortunately the wall surrounding the base is at a pretty decent height so the soldiers only have to worry the ones at the gate before they climb over the wall.

Karl cursed again as he cut down another mimic as two more tried to pounce on him, those two were cut down by another soldier, the mimics have already broken through the gate. There was screaming coming from the wall, he turned to find that there were already 20 mimics on the wall and have killed two of the ten soldiers stationed there. He quickly fished out a flare gun, making sure the colour was correct he fired, signalling the other soldiers to fall back, they must buy a few more time for the researchers to leave the base with their data. As he and the other soldiers fall back to the second defence line, commander Walter swoops in taking out four mimics that were dangerously close to a soldier lying on the ground.

"Karl, report" Louis said to him as he pulled the soldier up on his feet, no need for long words in this situation "They have gotten over the wall and any longer they will surround us" Karl said as he sliced down a lone mimic charging at him. Louis nodded "Hold the line until the flare is up!" He ordered, the soldiers nodded their heads in grim determination, he sidestepped a charging mimic and raised his blade to cut off another mimic pouncing at him, the charging mimic's cries can be heard behind him. They are holding their ground on the second line for a good ten minutes when the earth started shaking, something big holding a cannon charged through the gate making the hole bigger as it took aim at the line and fired, a boom, a scream and he was forced down to the ground by the explosion.

"Shit fuck, fucking shit!" Luca, a soldier of the Arnoux Regiment cursed as he checked on Walter, the commander groan making him sigh before slapping him, that made him focus, "Sir, we got a charger, get up!" his instinct scream at him and he turned just in time to cut a mimic and parry another one. He wasn't lucky though as four more mimics jumped over the commander to pounce behind him, Louis just hear the soldier's scream as he used his manoeuvre gear to get up, a snarl behind him, he dodged a pouncing mimic twice and sliced one before using his hooks to catch two that were jumping behind a soldier to him, the mimics' head are rolling on the floor as he let go off the bodies.

After five more minutes, a yellow flare was shot to the sky, Karl breathed out a sigh of relieve as he opened a charger's hatch and light a dynamite before throwing it inside then closing the hatch, he quickly expend some gas to get away from the charger before it explode. "Clear!" he shouted and some soldier near the charger quickly stand clear a charger, the dynamite explodes but it the charger is still intact, of course it is, the charger's armour are able to withstand explosion but the driver can't. It swayed a little bit before finally leaning forward far enough to let gravity do the work, the ground shook as it fall flat, "The flare is up, fall back, fall back!" he ordered the men, some looking relieve as fatigue was starting to catch up to them, he nodded to himself before looking for Louis.

Karl found him just as the commander killed three more mimics in one clean sweep, "Sir! Flare is up, we must fall back!" Louis nodded before yelling out retreat to the soldiers, he turned to his section commander, as he was about to give an order another charger got through the gate and fired its cannon. Both Karl and the commander was flung off the ground again, he checked himself to see he was relatively unharmed, that can't be said for the commander though, he lost both his left leg and arm. "Commander!" he shouted amidst the retreating soldiers.

Louis coughed out blood as he watched his section commander pulled out tourniquets to stop the bleeding, both of them can't make it back, so as Karl finished the one on his leg he pulls him closer "You're next in line" he said before pushing him back. His eyes were wide as he processed the information, his job as a friend or for the regiment, finally making a choice he turned and start the long trip to B base, Louis sighed before turning to the remaining soldiers that stayed or too injured for transport.

"Soldiers! Last stand!" he shouted, the soldiers eyes became determine as they faced the monsters, the first explosion started as soldiers started dying, Louis managed to killed ten more before falling down and they started to swarm him. Before succumbing to his wound he pulled out a dynamite and with difficulty, lit it, as the mimics were all over him there was a pain starting from his hand to his entire body before finally the world went dark.

Information redacted, request commander's approval

The Mimics

Written (Redacted)

Objective (Redacted)

Approach (Redacted)

Summary

Mimics is what we called those creatures that came out of a portal, which is a tear in the air (Redacted). They are called so because of the familiar faces some soldiers recognized them, after extensive research we found they were made (Redacted). The mimics usually comes in waves of thousands, there are some lone mimics, killed them on sight (Redacted). For more information, reference (Redacted)

Information redacted, request commander's approval

Things are spicing up a little, we got some information on some of the horrors outside the walls that a regiment is holding them off. Next chapter I'll write one about the charger and the next one about the chiv, yes it is another creature.