Jacksunny uses another feature on his shotgun that amplifies his voice. He shouts: "WE MUST HOLD!!! after 15 MINUTES, BACK-UP WILL ARRIVE! DO NOT ATTACK A DARK-BLUE ALICORN! SHE IS THE BACK-UP!!!!" And then he turned it off. "Holy shit," Jack said to Sci-mon. "That was fucking loud!" But Sci-mon was in deep thought. 10 seconds later, gunshots pulled him out of his thoughts.

"I'm pretty sure that is called 'The Royal Canterlot Voice' by ponies. Intresting feature. Helpful if you want to be heard." Jack chimed it again.

"HOLD!!!!" He ordered, and everyone picked targets, nodding to their brethren and saying bye, they were sure some would be ponified. "FEED THESE MOTHERFU-" *BANG!!!!* Everybody who had a long- range weapon fired at once. With earmuffs, earplugs, and other sound blockers made sure they would be fine. The ponies, however, was a different story. 250 died, another 75 were injured, and 50 went deaf. Others had intense ringing and couldn't concentrate, so they fell, and covered their ears until the ringing stopped. Again, all the snipers fired at once, 250 shots almost blended into one sound. The ponies were hit almost as hard as the first one. "about 9 minutes left! Oh, shi-" He was interrupted, again, by potion motors. He hit the dirt, followed by the sounds of the potion hitting.
*Splash!!*
*Splash!!*
A few seconds of silence, before around 40 shots splashed everywhere in the middle and back, to target the majority and the snipers. The lost a lot of people. Luckily, a lot managed to dodge. 100 soldiers ponified. Jacksunny and Sci-mon rushed into the fray of NewFoals and started firing, slaying former soldiers without remorse. Shot after shot was fired, the machine gunners starting to fire, which was a bad sign, after another bombardment, and 41 more soldiers lost to magic bolts, they had 297 soldiers left, and more falling faster as time went on. Jacksunny realized something. "EVERYBODY GET THE FUCK DOWN!!!!!!" And the remaining humans instantly slammed into the ground, just before dark-aqua beams of arcane death cut swathes into the invading ponies. Then, she landed. Princess Luna, mane dirty, her coat splotched with blood n' mud, armor made of random pieces of metal. But one thing was off. She was..was.. "Holy shit, she's on two fucking legs!!!" She was also firing 3 shotguns. One in her hands, two in her magical grip. The ponies were turning to aim at her. "WELL?!! THE FUCK ARE YOU ALL WAITING FOR??!!! FIRE ON THOSE FUCKERS!!!" The remaining soldiers charged out of the trenches, firing at the remaining ponies. They killed a few more of the soldiers, but eventually they were overpowered by the humans. Once the last soldier died, 10 seconds passed in silence. Then everybody erupted into cheering, whooping, and other sounds to note their pleasure at their victory. After another 10 minutes, and after the noise died down, a convoy arrived, and more bi-pedal ponies got out.

"Hello! Us scientists in the NLR have discovered something! We have modified the conversion potion so it turns you into a bi-pedal pony, but your appearance stays almost the same and you keep your mind. As you can see, we have tried the potion ourselves! This will allow you to exist inside the barrier! We just need a test subject!" Jacksunny stepped forwards, followed by Luna.

"Fuck it, I'll do it! It's the least I can do for Luna here." And with that the scientists got him to roll up his sleeves, and they injected him. After 5 seconds, he doubled over and threw up, his body changing. He grew skin-colored fur. He grew a 10-inch horn. After 2 minutes, he got up, groaning. "Fuck, that hurt like a motherfucker! Holy shit, they weren't lying. Yeah, it's safe! Get your asses over here!" Everybody got a shot. They were excited to be able to move through the barrier.

"Holy shit! I'm an alicorn!" And everybody turned. It was their leader: Admiral Vasckine. It actually made sense to them. All the ponies' highest ranking leaders are alicorns. "Wait, does this mean.."

"Yes!" Luna announced, and everybody's attention focused on her. "Clearly we should lead together, we could teach you how to use your-no, our soldiers' new abilities, and you could teach us actual strategy!" And she offered her hand.

"Well...What do you say, boys?" He asked, and was met with a collective 'Hoo-RAH!* and raised fists. He took her hand, and said: "Well, I think we shall. I think a celebration is in order. After a bit of work to set up a stage, and scouring for instruments, but decided to attempt to use magic versions. According to the scientists, they just have to imagine the instrument and it's sound. During this, Luna and Vasckine talked, getting to know each other. After 9 days they were done. Everybody, except volunteers, who were patrolling to ensure that ponies weren't able to sneak up to the party. Unfortunately, the barrier passed over during that time, and they didn't die. After this, the pegasi made 'cloud cannons'.

Cloud cannons are made of hardened clouds, and they propel a lightning bolt up to 50 meters. They even made cloud armor. The only problem was that only pegasi could use them. But anyway, Vasckine picked his favorite music for the party:

And him and Luna danced. Just before they were able to finish, an alarm, generated from a unicorn, sounded, loud as fuck. "Fuck sakes." One of the musicians said. "Seriously, now they attack?" And everybody readied spells. They had plans. The pegasi would strafe the ponies, firing cloud cannons and dropping thunder bombs. The earth ponies would charge into the front lines using quickly-made armor and shields, armed with sharpened rebar. The unicorns would be field medics, as well as provide mortar and sniper fire. They were stronger then their pony counterparts, with added abilities being:
Earth ponies: Can use short-ranged elemental attacks, and can channel their magic into their attacks, hitting harder at half the speed. Also, they heal faster.

Unicorns: Have larger horns, granting far greater magic focus, can make magic projectiles be affected by gravity, making sniper bolts hit the ground decameters away from their targets, and generate curving bolts to travel over walls. Can use magic to basically be a Black Ops 3 character, being able to slide abnormal distances, wall run, jump higher. They can also super charge themselves, creating a double of their current weapon, being able to wield both at the same time regardless of how the weapon needs to be used. Can summon a field that behaves like a Titanfall 2 Vortex Shield, capturing projectiles and reversing their course, at the casters' will.

Pegasi: Can shape clouds to a far greater extent, able to harden said clouds to make weapons, armor, and buildings. But with a catch. Only pegasi can use them. They fly much faster, and can do so without magic, having correctly-sized wings. Magic just makes them faster. They can supercharge themselves every 10 minutes, able to generate a large lighting field several meters thick, over a radius of 15 meters, frying absolutely everything within said radius, using a combination of regular and magic lightning to affect even hydras. They can form balls of pure plasma and throw them. When they hit the ground, they instantly spread out, creating a very loud noise, to which they named these balls 'Thunder Bombs'.

Author's Note

Thought I'd state how OP the anthro ponies were. If you really think about it, humans are very imaginative, so their magic would run as such, rather than on spells. The potion would use the imagination to properly size the wings, seeing how the original version did affect the mind, the scientists simply altered it so it would apply it's changes according to how they think it subconsciously should go. I.E., the skin colored fur was because they wanted to keep their humanity. The larger wings were from them thinking the pony pegasi wings were too small for their bodies. Longer horns came from the fact we are used to very fine control, because of our hands. The ears and tail were from the potions' usual effects. They also have larger eyes, but smaller than ponies' eyes. Hoped this cleared it up for you.