They called it the most important war in Human history; one we were not allowed to lose. Our first and last line of defense stands alone against the onslaught, yet victory may be delivered by the very hands that sought to destroy us. Vigilo Confido, Curatrix Ab Alibi.

A collection of one-shots written by readers of XCOM: RWBY Within and XCOM: Remnant Unknown.

With the secret of Remnant's past in her hands, Ruby Rose must work with her teammates and their allies to bring an end to her world's greatest threat.

The Traitor is dead. Salem is dead. Ruby thought she could live in at least temporary retirement, but the universe had other plans. Stripped from her home, away from those she loves the most, she is forced to fight for a world foreign to her. Few others are in her position The only way for everyone get back to their homes, help X-COM win their war.

Following her final confrontation with Salem, Summer Rose is mysteriously transported to another world on the brink of war - not only with itself, but with an alien invasion. Can she navigate this strange new world? Will she ever find a way back home to Remnant? And what secrets does the Bureau hold? (Inspired by DrAmishMD's excellent XCOM/RWBY stories.)

The war for Earth is over, the Elders and Advent have been defeated. As Alpha Squad, the best XCom has, begins to settle into a new life of peace, their lives are thrown astray as a mission to find an old friend gets FUBAR. Now, thrown into a world new to them, they must adapt to survive... the high school classroom as teachers.

You tell someone from 2015 that aliens will rule the world by 2016, they'll call you a liar. You tell someone from 2020 that XCOM will rise up to fight said aliens, they'll call you a liar. You tell XCOM that a bunch of teenagers are gonna be their only hope of survival, they'll most likely shoot you after calling you a liar.

Tumbling through a mysterious portal was not Ruby's plan, nor was it to end up in the middle of a war between humans and aliens on a different planet. With her aura gone and Crescent Rose left at home, Ruby is swept up by Chief Engineer Shen immediately for her love of engineering and weaponsmithing, and together, there's nothing they can't build. - Faunus Ruby.

The sequel to XCOM: RWBY Within. Teams RWBY and JNPR return to Remnant in time for the Vytal Festival. They're relieved to finally have their lives get back to normal after nine months on war-torn Earth, but is the life of a huntsman ever truly normal?

This started out as a gag about various short scenarios that kinda escalated into a story thanks to an idea that one of us on the Discord server had. (Under Rewrite)

Vahlen's gotten her hands on a machine that selectively alters reality to a relative normal. How bad is Bradford going to freak out, and how much havoc will XCOM's soldiers wreck on the Avenger?

On their way to Atlas, after a long day of fighting, the group begins to feel exhaustion take them. Setting down, they settle in for an evenings rest and a finished trip to Atlas the next day. But as they rest, an enemy unknown reaches to their world, in search of a 'new breed', and rips them from their home. Big thanks to Le Vampire for the beta! (Abandoned, Archived)

Three years after a second defeat by the hands of Advent, The XCOM project puts all its hopes into a strange artifact, that promises to bring them heroes. What they get instead are twelve Huntsmen and Huntresses, seven Simulation Troopers, four members of an MMO party, and a Supersoldier. (Contains XCOM, RWBY, RvB, Halo and KonoSuba) (Rated M for Language, violence and Gore.)

"He's the best we've got, brutal in a fight and the poster boy of XCOM, sure when he first showed up he didn't know up from down, but he learned quickly, and that's just what XCOM needs to defeat the aliens. He's a great man and an even better soldier, I'm proud to call him a friend." -Colonel Peter Van Doorn, On Gunnery Sergeant Jaune Arc

In this fan fic Jaune will become a sleeper agent for Xcom in remnant waiting to fight the aliens when they come to attack remnant

The people of Remnant have fought the Grimm since the beginning, and barely manage to thrive. So what would happen if the suddenly find out that they are not alone in the universe? And that some of these visitors don't come in peace?

X-COM Failed. Dr. Richard Tygan and Engineer Lily Shen construct an escape route from earth based on abandoned Alien Technology. Bradford and a few surviving X-COM operatives escape through this Portal and reach a new world that and wonder what their future's hold for them now!

Abducted from Remnant, Team RWBY finds themselves caught in a war on an unknown planet. A war against aliens. With the alien threat looming over them, how much will they be willing to sacrifice to protect their friends and loved ones? How much will they be willing to change to protect everything they know? And will they ever find a way back to Beacon? [WhiteRose / Bumblebee]

After the incident in the Geoscape, Bradford, Dr. Vahlen and Dr. Shen decide they need to continue updating the infamous list of "Things XCOM Operatives are not allowed to do." - Based on DrAmishMd's RWBY Within story and of course on the original "Things XCOM Operatives are not allowed to do."

This world of Remnant holds five kingdoms well four kingdoms and one nation. The descendants of a long war from another universe are here and they will shake things up, they know something is out there. But will they be able to help in time or will the lines made by Chaos leave humanity divided. Rated M for combat but if you are old enough to watch RWBY or play X Com I trust you.

Remnant has been lost to ADVENT and their alien overlords with Ruby awaking on their capital world, Earth. She joins XCOM in a attempt to find out what happened to her friends as well as her world, but the clock is ticking as the Avatar Project nears completion.

What started out as a smash and grab mission, turns into a whole new adventure for a young Australian grenadier. After ending up in a different world filled with blood thirsty monsters and terrorists, he must now, instead of liberating the planet, he must now protect it with his life. (rest of summary inside) ABANDONED! COMPLETE REMAKE AND REDESIGN IN PROGRESS!

A strange anomaly causes the members of Team RWBY to find themselves in the midst of Earth's full-scale alien invasion with no way of returning to Remnant.

A collection of one-off short chapters that focus on minor events throughout the storyline of XCOM: RWBY Within. Written for my own entertainment and to keep my writing skills sharp while I prepare for the eventual sequel to RWBY Within.

As the Grimm attack Vale, a new force suddenly appeared and invades. Ruby Rose attempted to defeat the invaders and succeeds to an extent, but gets knocked out by a lucky blow. She is then taken prisoner and imprisoned on ADVENT's earth. Now with limited support, she must find out what happened to Remnant before the Avatar Project is completed.