When your life is as dull a gray as the world that surrounds you, the mundanities can make it all seem meaningless. Sometimes all we need is a little color -- or six -- to reintroduce us to what truly makes life worth living.

*6-16-2017 Edit, added Rainbow Dash tag because it triggered knighty.*

When a United States Army Ranger arrives in Equestria, the land is plauged by chaos, even the Royal guards cannot fight them off. Befriended by the mane six, the soldier is hired to help guard and fight for Equestria...

A reposting of a story on fanfiction.net

http://www.fanfiction.net/s/7921895/1/Guardians_of_the_Elements_of_Harmony

Author has consented

I remember noticing some grammar errors when reading this first time, unfortunately I'm too lazy to correct. If you guys'll comment on them, I'll fix 'em.

In which a filly Rainbow Dash is awoken by a night terror, and she decides the best way to overcome her fear is to spend some time cuddling with you.

A/N: This story is just cute for the sake of cute. No real plot or anything.

Humans.

Truth or myth? Ancient lost civilization or just an old pony's tale?

No pony has ever seen one, and most haven't even heard of them. But Lyra knows that these wonderful creatures are more than just old legends, and she's going to find out... and possibly drive her roommate insane in the process.

The Princesses find an alien creature barely clinging to life at the scene of a terrifying crash. Can the Combined Power of the Elements of Harmony save it, or more importantly, should they save it? Will the arrival of this strange creature tear Equestria apart?

TV Tropes
https://tvtropes.org/pmwiki/pmwiki.php/FanFic/Article2

I was the first human to come to Equestria, and I will be the first to die here.

My name is Able, and in five days I will die, leaving behind a filly that looks to me for everything.

These are my last days.

A man comes to Equestria. It's nice. Rainbow Dash becomes his friend, but something's bothering her...

He seems to be hiding something. He's told her a lot of things, things he hasn't talked about to anypony else, but there's still something eating at him. So, she psyches herself up for a visit to get to the bottom of it.