Warning: This may contain major plot spoilers for the campaign of Titanfall 2. If you do not wish to have it spoiled, TURN BACK NOW.
Also, I WILL assume that you know what Titanfall 2 is, since...well your reading a titanfall 2 fanfiction, so it would be kinda dumb not to know about the game your literally reading a fanfiction about. Alright then here we go

The story happens five years after the titanfall 2 campaign.

"SIM pod deactivated. Releasing hatch maglocks," A female mechanical voice said. Rainbow Dash groaned. This was the fifth time that she was being taken out of VR for some stupid mistake. Her father clicked his tongue disapprovingly as the pod folded open.
"Rainbow Dash, the point of being on a team, is to work together,"
"I can work with them, dad, it's just that I'm 20% cooler than them. Besides, they hardly are functional,"
"You can't go solo and expect to survive. My motto is-"
"Always be around one other person blah blah blah," She made a talking motion with her hand.
"Rainbow, this is serious. If you go out into the field and repeat those same mistakes, you wouldn't last halfway through the battle,"
"Dad, it's not a big deal, honestly. It's just that the AI in the VR systems suck," She complained. Her father raised an eyebrow.
"So the reason why you don't work together with the simulation is that the pilots are AI?" He asked.
"Exactly."
"So if they were real pilots, you would work with them?" Rainbow nodded.
"And I would kick their asses,"
Her father looked thoughtful for a second.
"Let's say I put you in a match with a team of actual pilots. Then would you finally cooperate?"
"Like war games?" Rainbow Dash asked excitedly. She had never been in a war game and she had always wanted to.
"Sure. However, there is one catch to this," He said, "You will have to face off against an experienced opposing team."
"Deal," Rainbow said. She was confident that whoever faced her would be turned into mincemeat.
"Stay here. I'll go fetch your allies and opponents. Be back in a bit," He popped out of the room. Rainbow Dash was excited, and what was only a dozen minutes felt like hours before her father came back.

"They are all set up in their pods. Linking you into the game," He tapped the control panel on the outside of the VR pod. It closed up, enclosing Dash into darkness for a second. Then, green lights appeared all around her and then she was whisked into the simulated dimension. She was in a dropship with four other pilots. The pilot turned back around to face them.
"Rainbow, this is a four V four. Meet my old friends, the Harmony Elites," Rainbows guts suddenly froze.
"T-the Harmony Elites?" She could picture her father grinning.
"I thought you said you could, quote, 'kick their asses', unquote,"
Rainbow Dash tried to say something but was cut off by her father saying
"Alright, no more questions, time to deploy," The ramp on the rear of the dropship lowered as they hovered meters above the air.
"Go go go!" A female voice yelled, and all three of them moved at once, catching Rainbow by surprise. They leaped off the dropship and landed gracefully, quickly running toward the center of the War Games map.
"What are you waiting for? Go go go!" The floor melted away from under her feet as Rainbow soared downward, somehow managing to land the jump, thanks to her jump pack. But all throughout the fall millions of thoughts were swirling around in her head. The Harmony Elites. They were some of the best pilots in the militia. The captain of the group was even on the IMC's top 50 Militia operatives. The moment she saw them, she instantly knew who she wanted to become. Sometimes, as a prize, her father would dig into the computer systems to pull up information and stories about them, which Rainbow Dash could read all night long. She knew each of their respective titans, their ranks, almost everything. The only thing she didn't know was their individual names.

But, another nagging thought. If she could impress them, they might consider taking her as a recruit or something. That thought snapped her mind back into action mode. She examined her surroundings, which she recognized from the pictures she saw of the war games map. She took off sprinting, jumping, wall-running, and wrecking the occasional grunt squadron until she reached the center of combat.
In the first few seconds, she was there, she was suddenly mowed down by a cluster of bullets. She felt the sharp pain from the contact point and a second later she was standing on a building. Damn. Five seconds in the combat zone and she was reduced to shreds. The bottom left corner of her helmet showed the killfeed.

Harmony 1 eliminated Rainbow Dash

"Ugh," Rainbow groaned. At this rate, she would impress the captain as much as a three dollar burrito would impress Gordan Ramsey. She set off again, quickly steadying her mindset away from the potential failure and to the situation at hand.

All of a sudden, a knife struck the ground next to Dashie, and a loud sonar pulse emitted from it. A split second later Rainbow jerked to the side as a foot came crashing down on her from nowhere.
"Whoa!" She exclaimed, firing off a shot in surprise. The pilot jumped back and deployed a circular device which produced a large particle shield. She whipped out an L-star and began blasting at Rainbow. She launched her grappling hook backwards, which tugged her out of the pilot's line of sight. She strafed around the wall and crept up behind the other pilot. From the weapon load-outs, she could tell it was Harmony 5, nicknamed Orchard. She snuck up behind her and pressed the barrel against Orchard's neck. immediately, she whipped around, knocking the gun out of Rainbows hands and firing a pistol rapidly, embedding three bullets into Rainbows arm. She felt the sharp sting as the bullets connected and formed simulated pain. Her mind was racing now, trying to find a way to combat her opponent. Suddenly, her hand landed on her grapple and she had an idea. Just as Orchard brought out her L-star and was about to fire, Rainbow threw the heavy metal end of the grapple straight at her face. She screamed in surprise and was immediately hooked in toward Rainbow. With one swift blow to the head, Orchards body fell and disintegrated into a fizz of holograms. Rainbow had managed to take out one of the Harmony Elite. She stared at her hand for a second before grinning. Picking up her Mastiff shotgun, she took off again.

Almost an hour later, the simulation ended. Her side ended up losing, but she had managed to get to the imaginary dropship for evac training. Rainbow Dash stepped out of the SIM pod and was immediately greeted by her father and another tall man, whom she recognized as Harmony 1, or the Captain.
"You were rather impressive," He said. Rainbow felt herself blush, but luckily she had the foresight to put on her helmet before stepping into battle.
"You call that impressive? Watch what she could do to the AI pilots. Her only fault is that she can't work with an AI team," Her dad said.
"Well, you proved that you can work with an actual team," Captain turned to her father again "DId you see how she time the grenade just right to distract my titan?" He said this without a hint of anger at Rainbow. Instead, he just seems to be...proud?
"My daughter is my pride and joy. I've been training her since she was 16," Rainbows father said, smiling openly at her.
"Oh, that reminds me. I got so caught up in the battle that I almost forgot. Didn't we make a test before?" Captain asked her dad.
"Oh, yeah. Rainbow, me and Harmony 1, we made a sort of test. If you could work with and eliminate at least 3 of the pilots on the opposing team, the Captian said he would consider you to join the Harmony Elites," Rainbows vision suddenly narrowed. Wait, did her father really just say that? Did the Captain agree? Was she going to join the Harmony Elites? She opened her mouth to ask something, but all that came out was a pile of gibberish. Both men laughed.
"Alright then, what do you say Rainbow? I'll give you a few more tests and, if I'm pleased with the results, you'll be in the Elites," Rainbow gurgled again.
"I think that's a yes," Her father grinned. In a split second, Rainbow was screaming yes and doing a sort of dance.
"Uh, Rainbow...?" The Captain started to ask
"Just, um, let her have this," Her father said.

Months later, Rainbow had finished the tests. It was distracting both because it was for the Harmony Elites, but mainly because each session was tested by a different member of the Elites. She even managed to learn a few of their actual names. But now, it was a waiting game. She twirled her thumbs around each other anxiously.
"Don't worry, I'm sure you'll do fine," Harmony 7, or Fluttershy as Rainbow had learnt, sat beside her.
"Thanks, Fluttershy. I'm just a bit nervous, since joining the Harmony Elites had been my dream since...um...since I first wanted to become a pilot,"
"That must have been a long while. Don't worry, I'm sure you'll make the cut," The Captain, or Dusky Gadget as she learnt, strolled out of his office. It was a fitting name, actually, considering half his body was replaced with cybernetics. He even had a miniature laser turret that could pop out of his shoulder at a moments notice. She considered asking him if he had decided, but decided against doing so, and instead watched as he walked down the hallway. She noticed something odd on the back of his head though. At the spot were his head connected with his neck, there was a glowing blue light. She stared at it for a few moments before turning to ask Fluttershy about it.
"Oh, that? That's the Captains titans data core,"
"But what's it doing inside his head?"
"Well, the Captain was offered a Vanguard-class titan, but he loved the Tone class so much he refused, but he still wanted the ability to connect with his titan on a personal level. So, he got modified so that whenever he steps inside a titan, the data core automatically changes the titans operating system to his data cores AI. It's kind of cool, actually, since he could use any titan as long as he manages to get inside the cockpit," Fluttershy finished.
"Wow," Rainbow said.
A moment later, Dusk had strolled past Rainbow and Fluttershy with a very nervous Harmony 8, or Trixie, in his tow. He closed the door to his office. Silence for a few minutes, then a loud yell, followed by a very loud "You cannot possibly get rid of the great and powerful Trixie! The team will crumble-". A few minutes of what Rainbow hoped to be a calm discussion later, Trixie burst out of Dusks office, slamming the door behind her, absolutely seething. Her teeth were clenched and her hands balled into fists. Fluttershy and Rainbow stared at her. She glared back, and Fluttershy winced a bit, hiding behind her hair. Trixie looked like she was about to say something but instead stormed off. Dusk poked his face out of his office again.
"Rainbow? I decided. COme on in," Rainbow nervously stood up and walked into his office. Just before the door closed, she caught a glimpse of Fluttershy showing her a thumbs up.
Dusks office could be described as chaotic. Papers were strewn the desk and behind him was a mess of electronics. He shuffled a stack of papers around and pulled one out. He took a bit to read it and began.
"I see your hand to hand combat is really good, although your long-range accuracy is not too good," He looked up at the fidgeting Dash "We could use another close-range fighter like you,"
This reassured her as he continued.
"Everything so far is good, except," he looked up.
"You don't seem to have a registered titan,"
"Well, I, uh, never exactly piloted a titan outside of a SIM pod before, so I never really needed to get-,"
"Which class would you say is your best?" He interrupted her.
"Uh," Think Dashie, think! She screamed in her mind "Uh, Ronin, sir," She quickly added. Dusk looked back down at his papers.
"Alright, that can be arranged. Also, don't call me sir, that's the riflemen's name for me. We're all friends in the Harmony Elites," Rainbow gulped and said
"Yes, si-," She caught herself before she said sir. Dusk laughed.
"Alright, alright, you're in the team. Ill escort you to your room aboard our ship, the Gyrfalcon,"

NOTE

And this is what I've been writing for the past month that I didn't post. Im not sure if this game is still relevant or not, but personally I like it. Yeah, uh, in case anyone who read my first story is reading this, sorry about not uploading, next chapter will be on that story. Also, any tips on improving writing combat scenes would be very much appreciated.