Once upon a time, on the not-so-magical planet Earth, there was a US Marine who signed up to defend his country. He was assigned to a fire team, the fire team assigned to a squad and the squad assigned to a platoon. Together they defended the area surrounding a Forward Operating Base in Afghanistan from insurgents. If only it were that simple.

When lone Marine is transported to Equestria he finds a post-apocalyptic wasteland. With no orders, no resupply and seemingly no hope of return, he sets out to find what brought him here, and why.

Strong Language Warning: He swears like a Marine.
Disclaimer: I'm not a Marine

What do readers have to say about this story?

"[T]his has to be the dumbest sounding plot I've ever heard of. But my god do you take that and fuck it in its ass ... Its just so real and witty and genuine that the whole premise actually works!" ComprehensiveBrony

"Yes, it's human-in-Equestria, but it's good. ... the action scenes had me sitting on the edge of my seat" Tebee

Cover by me, background stock by DarkDragon774

Twilight Sparkle, Arcane Mage, knows that there is some truth to the story of Nightmare Moon, but her mentor, Princess Celestia, dismisses the matter in a heartbeat. She sends Twilight to the town of Magiville to oversee preparations for the Summer Sun Celebration, much to Twilight's distaste.
Unbeknownst to her, the darkness is gathering in Mystica. Assassins lurk in the shadows, Undead gather in the forest, werewolves sharpen their claws, and criminals and mercenaries prepare themselves.
To win the coming battle, Twilight will have to rely on her wits, her magic, and the five mages she's been saddled with. No matter how much they annoy her.
Rated teen for violence and language. Humanized, action-y. Based on the first two episodes, with some large changes made.

The Elements of Harmony are known to many as the most powerful form of magic known to Equestria. Together, their combined might has cleansed deities as powerful as Nightmare Moon of the evil that plagued her, and has imprisoned forces as insidious as Discord, the embodiment of Chaos itself.

So when news of six mysterious strangers, evidently not of this world, arrives in a letter from the Princess, with rumors abound that they are searching for the Bearers of the Elements, Twilight Sparkle is rather concerned, and more than a little suspicious, of their intentions for the Elements of Harmony, fearing that they might be plotting to either destroy them, or somehow steal its power for some unknown, nefarious purpose...

Except that they're not plotting the theft, or destruction, of the Elements.

They're plotting a succession - a succession of power UNTO the Bearers of the Elements. Powers the likes of which ponykind has never witnessed - and power which may upset the balance of magic in Equestria forever...

Book One of Three of the Codex: Equestria, and the first part of an epic trilogy that will shake the very foundations of Equestria as we know it.

When Pinkie Pie, the trickster mage finds a mask in the middle of the Everfree Forest. She runs of the Twilight for some assistance. Although the makes is very similar to Pinkie's Trickster mask, things don't seem right about it. (My Little Mages was created by Didj (originally said ponibooru, what is wrong with me) on Deviantart. It was just some of the character for FIM turned into humanized versions of the characters and made the world more magical. Any one who has seen the image may know where the fic will end up (if so please don't spoil in the comments)).