4000 years before Darth Vader, there was Mandalore the Preserver, who mysteriously disappeared from the galaxy. With the death of Chancellor Palpatine during his attempted kidnapping, the Republic seeks a new advantage over the CIS, which comes in the form of the newly found Mandalore. But something draws the Jedi away from the Republic: the screams of those suffering genocide.

The Republic after finding a small planet on the edge of their space, is introduced to the Milky Way. For 15 years there was an unstable peace. However War is indeed inevitable and the Republic, after an incident over a Terran Colony, began its invasion. But Terrans do not go quietly. These are the stories of those who fought the war which will be known as... Bellum Terranum.

As the battle of Christophsis is ongoing, a new faction emerges over the crystalline battlefield. Confusion, worry and fear permeate the Republic lines until a first shot is fired in anger by the Confederacy. A change stirs in the Force, the Reclaimers are awakening and the Galaxy at large is powerless to stop them.

Having been awoken by his faithful companion. The Master Chief and Cortana find themselves in an unknown galaxy. Knowing the only way to survive is to remain under the radar. But in a galaxy gripped by war, such a thing was never going to be easy. As the Chief try's to up hold the status quo in the ever changing world of Mandalore, as the galaxy slowly torn apart around them.

Humanity is pushed to the brink as the military of Reach falls. Not long after, a Lone Wolf and his CO are saved from death on Reach as one of humanity's hopes is extracted off world with a battle group of ships arriving to make sure humanity actually has a fighting chance. An escape leads to another chance to have their own adventures in another galaxy with so many possibilities

/First contact with an entity known as the Galactic Empire on our outer colony world of Charis proves hostile. Their colonization attempts have threated UNSC and Second Covenant citizens. The solution? Reclaim the Halo, enter Andromeda breach, and strike back. OPERATION: GALACTIC INCURSION./ 2561 - New Hope. CH4. IN PROG

The unsc Frigate Thunder and its captain urban holland have been dragged into the Andromeda galaxy and encounter the empire an the rebels who will they side with and will reinforcements come

When the Milky Way is revealed to the universe at large by a derelict CIS warship, the UEG are forced to become members of the transgalactic community, but its existence is soon threatened by the decline of the Republic, and the rise of an Empire. Adopted from SpaceCowboy2013.

The Galactic Empire is a Beast, but the beast is blind, and it will soon find itself dragged into conflict with unforeseen enemies and unusual allies. The UNSC is losing the war to the Covenant, and the Prophets consolidate their power over their Dominion. These Gargantuan forces will collide in a war that will leave the galaxy forever changed.

Vader had it all planned out. Sidious would die. For years he had plotted, conspired, murdered, and forged elaborate lies to get to this point. However, when the Force throws in a new variable, years of planing are called into question. Will the Sith Lord be able to complete his revenge, and who will he be in the end... Anakin or Vader?

In the midst of a Cold War between the CIS and the UNSC. An ONI agent and an ARC trooper discover a more sinister plot beneath the surface and most work together to orchestrate a coup against the Chancellor.

In a twist of fate, the UNSC Spirit of Fire arrives in the Star Wars galaxy, where it crosses paths with the daring Ghost crew. Together, they defeat an Imperial Star Destroyer, integrate a hyperdrive, and forge a strong alliance. This unexpected alliance kindles a glimmer of hope, hinting that the Spirit of Fire may yet navigate its way home.

Captain Cutter was planning his operation on the Ark when suddenly a ship appeared out of nowhere. What will happen when the crew of the Spirit of fire discover a galaxy far far away ?

It was said that those who came before the Forerunner's created all life. They seeded fertile dark matter that exists and created universes. They willed atoms together to create intelligent life. Yet, despite their accomplishments, they fell without a fight. They let the denizens of the Milky Way commit wholesale destruction of their society. Or did they?

A collection of short stories in a merged universe for Halo and Star Wars during the last year of the Clone War and the later years of the Insurrection. The United Nations (AU) discovers a galactic community ravaged by civil war, within which a charismatic envoy beseeches them to choose a side. Experience the fanfic that got me into grad school! (Cross-posted from AO3, same name)

War and economy are the only things we know. If your civilization wants to negotiate with us, then we will invade your market with our resources. If you want war, we will make you fight among yourselves, and then we will come and pick up the ashes.

10 Years after the Human-Covenant war and an Alliance between the Sangheili and Humanity keeps that Milky Way stable, soon though, a dead battlefield is discovered and the discovery encounter leads to UNSC military forces being deployed to the edge of the Andromeda Galaxy, also known as...The Outer Rim. (21BBY & 2564 AD Story start year)

I wrote this a few months back and forgot to publish it yesterday, epic fail

What happens when someone gets Isekaied into the Star wars galaxy at the start of the invasion of the Naboo with a modified halo Wars unsc that takes units from the Covent and banished in a unsc style along with some lepi and the ability to unlock new halo technologies over time, How will this affect the Star wars galaxy?.

2552. The UNSC's Earth responds to the appearance of the First Death Star.

The war with the empire brings in new players... And a new angle. Rated T for violence, death, and profanity.

During a routine safety test, the Slipstream Space Drive of the Infinity malfunctions, catapulting them into unknown space. Little do Lasky and the members of the Infinity know is that they will soon change the fate of a far away galaxy. (Undergoing Chapter-by-Chapter Rewrites. Chapters 1-15 rewritten. Chapter 16 rewrites ongoing.)

When a mission to capture a Covenant warship for ONI's Beta-3 Division is halted by the invasion of Reach, and a SFTE malfunction causes three UNSC vessels to end up in a galaxy not their own, how will they respond, and how will they adapt? In any case, things will never be the same for the inhabitants of either galaxy.

The Clone Wars raged on for longer than anyone had imagined. It was believed to last for a short 3 years. A third faction continued the war pulling the strings from the Unknown regions, and now the Republic are pulling them into this war, not as an ally but as an enemy. How will this tip the scales of power in the galaxy? Who will emerge as the conqueror?

Retiring from bounty hunting and returning to Mandalore after the Battle of Geonosis to fight the resurgent Death Watch, Jango Fett once again leads the True Mandalorians in battle as Mand'alor.