The year is 2551, and the Human-Covenant War rages. A lone Spartan III finds himself at the center of a conspiracy that could either destroy the Covenant from the inside or permanently cripple Humanity.

A brief history of the UNSC's greatest shadow warriors.

Or 'How I became the bane of Humanity's enemies'. It just happened. I was there. It was ugly as hell, but now I'm helping as much as I can. Of course, things had to start in Harvest... but I'm not alone. (Halo Marine!Insert) (Some characters have been Genderbent, just a few)

This story takes place in 2558, October 10th, inside of the UNSC Infinity, there was some Sangheili clans which allied with the UNSC a bit ago, however there is still war going on, but Spartan B-250 had a day off on the UNSC Infinity, so he better make this day the best. (WARNING WARNING...There is sexual content in this story, be aware!)

the story of the UNSC Razorback a Paris class frigate that was disabled in the battle of Reach

Being an experiment always meant being a failure, and that's what she was. Half-Spartan, half-ODST, she belonged to neither side. But along the way, people enter her life, unconsciously making her realize that she did belong somewhere. Becoming introduced to the Spartan-family was the best thing that happened, besides literally crashing into Master Chief on one of her missions.

Almost Five years after her world fell apart, Maddie Harper is still fighting. Old wounds are reopened as she fights not only the enemy who mutilated her but the demons that have haunted her every step. With ARC DREAM on the line and no hope of reinforcements, Maddie stands alone against the odds and fights for the future of all mankind. On Ballast, a legend is born. (Spook Finale)

[AU Halo] Tras la muerte del benevolente, piadoso y perínclito emperador Yudd Grunt Ruvif, el imperio de Sanghelios queda a manos de Hero Grunt Ruvif quién resultó ser un tirano arrogante, megalómano narcisista y vedetista emperador sanguinario opuesto a su padre, quién escatima en ética. El nuevo emperador da inicio a La búsqueda del poder en la que Yalmor se ve envuelto.

New Mombasa. One of the most thriving cities on Earth, reduced to a ghost town in a span of one night. The Covenant own it now, and anybody who could've stopped them is either dead or gone. Or, so they think

Halo: Feet First covers the story of a team of UNSC Orbital Drop Shock Troopers of the 7th Battalion, 105th Shock Troops Division. The main character, Duncan Iris, faces the full horror of the covenant war effort against humanity as well as the brave retaliation of outnumbered and outgunned UNSC forces. However, he also witnesses the turning of the tides as the war progresses.

We all know that the flash clones in halo lived normal but crippled lives, some more than others, and would probably die not long after. What happened to 117's clone? This is a story of someone who had great ambitions in life but had not the talent to reach it reincarnate as John's clone. Gifted with the Gamer, those ambitions would come to fruition, sooner or later. Gamer!SIClone

Their bond was unique among spartans… Even as it slowly ripped them apart. Rated T for violence, death, and profanity. Does NOT follow series and such. Updates infrequent currently.

What if Preston Cole had proposed a more radical version of his Cole protocol in the second year of the war? What would occur if the UNSC changed its ways? How would humanity adapt to the situation to evade the genocide? 'Winning' humanity AU. May be rated M when... It gets rated M, or when someone advises me to. I need help with tips for writing :D

Thousands of years before the emergence of the Human Covenant War, before the struggle of Humanity against an alien hegemony, a different war raged on. Just before the end, one seemingly ordinary being will bear witness as the last chapter of the Forerunners comes to an end. SI-OC Ancilla.

A prequal to Confused Love in War, we follow ODST Scott Sterling in a life changing deployment early into the Human-Covenant War. On the same planet, an Elite is about to have their life changed as well. Lies will be uncovered, minds will be warped, lives questioned, and a lot of stuff will happen that Scott was never prepared to handle. Let's see how it plays out, shall we?

After one hundred thousand years, Mendicant Bias recounts its betrayal and defeat, and seeks atonement.

Second Lieutenant Elias doesn't realize exactly what he's getting into when he climbs on board to man the turret of the Warthog. It's not really something he considers, there are Two Spartans in the front, but they need a gunner and he might as well fit the bill. His first mistake was assuming that Noble Two was a good driver His second mistake was assuming Noble Six was any better

CIVILIAN SOS BEACON DETECTED. UNSC CORVETTE PRIMO VICTORIA DISPATCHED. ASSIGNED MISSION LEAD: SPARTAN COBB. SITUATION DEVELOPING.

The 23rd age of doubt began thirty eight years ago, and while the discovery of the brutish race, the Jiralhanae, recently shook the Covenant, not much has changed for the Theocracy. However on the asteroid T’vao, a young Skirmisher is born and her story will shake the Covenant to its core. SI OC Skirmisher, starts 25 years before Harvest.

How does one make progress, by their voice or with a gun? What is the difference between treason and revolution? Does patriotism mean accepting the government's word or rebuking it? How can people be served if they do not want your service? Should orders always be obeyed even if they are wrong? Can one speak out but still be loyal? Will violence, met with violence, bring change?

Kate B-241, a spartan 3, gets sent to defend a ship travelling to reach. Completely unaware of the escalating conflict that is unfolding there. (Contains depictions of Graphic Violence, Sex and R*pe)

It has been 15 years since the Battle on the ark. Now awoken, John finds himself in a galaxy at war. Human and Alien factions fight for control in a power vacuum left by the destruction of the Covenant and UNSC. With is former loyalties gone, the galaxy at war, the Chief now needs to decide if he's human or machine. Harems and sex.

After the crew of the UNSC Albany crashes on an unknown planet, they suddenly come across an entirely new civilisation, oblivious to the rest of the galaxy. However, despite this new society being the dominant entity, deeper secrets lie beyond.

The Chief has defeated the Didact, and Cortana sacrificed herself to save him. But is she really dead? Transported back to the year 2020, Cortana joins forces with a Hacker and his friends from the past to try and return to the future. Meanwhile in the future, the Master Chief must try to continue on after the loss of his closest friend. Rated M for Strong Language and Action.

A convict, a teenage MAC operator, and a disgraced XO walk into a bar on Luna. That's not a set up to a joke, that's just the calibre of Navy recruits in 52. I don't care what the brass thinks of us, all I know is that they need guys like me, who can jump a cruiser through slipspace onto a spot the size of a needle without so much as a day's formal training. Desperate times, right?