The basis of this story is a relatively simple one. What if you take the UNSC and place into the shoes of Earth and its Stargate Command, ships, colonies, armies, and Spartans included. The bad guys would be the usual suspects: Gou'ald, Replicators, Ori, Wraith, etc. This'll take place around the time the Spartan II's received their armor, so they exist, and due to the fact I will NOT have the Covenant in this story means that the Spartan III's won't even exist in the way we think of them. But I might still work them in, depending on how I see fit to draw out this story, I really like Noble Team and Noble Six in particular. So you might see them work their way into prominence.

The date of the beginning of this story is 2527, three years after the Spartan II's get their armor so they've become quite experienced with it and I can pull them in at any time. Oh by the way, if it helps to envision the human troops in Halo 4 armor (Like in the opening cinematic) go ahead because it's how I envision them. As for ODST's…envision them like in Halo 3 ODST. But I would suggest you have a separate window set to the Halo Wiki site to reference anything that you may not recognize.

Lastly, disclaimer, I do not own Halo or Stargate, if I owned them there would have been a Halo movie and Stargate would still be going strong.

Chapter 1

Location: Centra Gamma System, Planet Meridian

Date: February 21, 2527

Time: 1345 Hours

The suffocating heat was horrendous for the platoon of UNSC Army troops as they trudged along through the dense bug infested jungle. Their armor and uniforms were caked with mud after only ten minutes of slogging through the dense system of bushes, bog, and roots. Their purpose for being out so far from their comfortable home base at the city of Alicorn was beyond them as ONI had not given them specifics. All their CO had been told was that an Insurrectionist cell was operating deep in the jungle and had some equipment that ONI would rather leave unknown to the general public. So the Army troops had been smart and not argued, ONI is not the group to question.

They'd taken an Elephant through as far as they were able to go until the ground became too unstable for the massive vehicle to continue onwards. So they had to hump it to the target area, an abandoned settlement now overgrown from the instability of the ground around it. That area was prone to sinkholes and several exploration parties had seen their large heavy tracked vehicles go down with supplies, equipment and in some unfortunate cases, people.

"Lieutenant, how come we're doing this?" one of the PFC's in the outfit asked as they trudged through the underbrush.

"Because ONI asked us Private, what more do you need to hear?" Lieutenant Harrison responded, looking at the data pad in his left hand.

"Well it's not that sir," the same trooper responded, ducking under a large fallen tree as he continued forward.

"Well please Private Stone, share with the rest of the class," the First Sergeant at the head of the column growled.

"Why isn't ONI sending someone with the specialized training and clearance to accomplish this mission, like a Spec Ops team? Or ODST's? We're simple ground pounders, I think they sent us because we're expendable."

"No one here is expendable to the UNSC Private, just you," the First Sergeant responded again climbing up a small knoll as the other thirty-five troops present got a good laugh out of that little jab, "Hold it!"

The NCO's fist went straight up, clenched tightly letting everyone know to stop and take cover. The unit did this without hesitation and hit the dirt and ducked down behind the roots and fallen trunks of trees. The Lieutenant crept up with Assault Rifle in hand and laid down right next to the Sergeant at the lead.

"What do you got Sergeant?"

"Looks like we're out of cover, just high grasses and low saplings until the settlement," the man replied as the Lieutenant pulled out a small scope that fed into the camera on his armor.

"I don't see anything…wait. There, the church tower, looks like they've got an MG overlooking the entire town. No vehicles that I can see, but there are a few Innies walking around. Not very heavily armed from what I can see," the Lieutenant said as he surveyed the overgrown and mostly derelict settlement of metal and brick.

"What's our first move sir?" one of the Corporals near the two of them asked, cradling his M392 DMR, the standard weapon for Army Corporals.

The Lieutenant carefully surveyed the entire route into town, it was basic to say the least, two roads going perpendicular to one another meeting in the center of town. The entire area around the town was cleared with terraces for farming the fertile soil that was now being reclaimed by the forest with tall grasses, ferns, and saplings growing in abundance. This would provide some concealment to the platoon as they moved forward to try and take care of these Innies. Lieutenant Harrison had thirty-six highly trained and well equipped men and women under his command in comparison to what appeared to be maybe a dozen to twenty lightly armed and relaxed Insurrectionists. If there was anything that the Lieutenant's ten years and two tours of service on this planet had taught him was that the Innies were not disciplined, their watchmen were never as alert as they should be, their weapons were poorly maintained, they had little to no equipment, and were horrible shots with anything but hunting rifles. Meanwhile, he knew his MA37 Assault Rifle and M-392 DMR armed troops could hit them at a much greater range than the Innies could. So he would have to use that set of advantages to compensate for the lack of cover and the superior defensive position the Innies had then he could get through this with his entire unit alive and hopefully unscathed.

"Time to report in," Harrison grumbled, putting away the scope, "Nest this is Snake Two-Five come in please."

"Two-Five, authenticate," the radio crackled, damned paranoid spooks.

"Authentication Code: Alpha Delta five three one," Lieutenant Harrison responded on instinct.

"Confirmed Two-Five, report over."

"We have arrived at target area, confirmed hostile presence. Awaiting orders and requesting support."

"Negative on support Two-Five, Command has High Priority Object in area. Use of air and artillery support is forbidden," the radio responded, "Your orders are to take and secure the area and await aerial extract and to take no prisoners."

"Copy that Nest," Harrison grumbled, quite deflated at not having the benefit of support but glad that they wouldn't have to deal with prisoners, not that they would have taken any.

"Good hunting Two-Five, Nest out."

"Alright, squad leaders," the Lieutenant whispered into their comms, waving them over after sliding back out of sight.

The three squad leaders all crept on over carefully and ducked down next to the Lieutenant.

"What's the plan eltee?" first squad's leader asked.

"Alright, first squad will be going across the middle with second squad on the right swinging out to envelop the Innies' right flank. Third squad will have the left, once the Innies open fire, they will provide cover fire. I want Jackhammers on that tower first thing, anyone with a SAW I want on this knoll providing suppressing fire. Have O'Brian and his long rifle right here on counter-fire against any snipers or MG's. Once we're in the town fireteams will leap frog from building to building clearing all hostiles in their path. We're on our own here, no artillery, or air cover so it's just us and them. But on the bright side, we take no prisoners. Understood?" the Lieutenant asked, making sure his squad leaders had the idea, "Alright, let's move."

The three squad leaders moved back to their respective squads giving out orders and the unit began to take up positions around the treeline as the three Squad Automatic Weapons carriers began setting up their rapid firing weaponry. The lone sniper rifle wielding member of the platoon set up shop underneath a fallen log that provided a premade pillbox looking piece of cover and set down several magazines next to his rifle. The winks on the Lieutenant's HUD flashed up and informed him that his unit was in position and ready to go. So Harrison flipped his MA37 and Magnum's safety to off and waved his arm forward to signal for a slow stealthy advance.

He and the rest of the Army troops advanced carefully through the high grasses in a low crouch. The grasses and saplings were all the way up to their shoulders when fully upright and made it easy to advance without being spotted. They had roughly fifty yards to cover from where they started. Thankfully the spot they were crossing wasn't the longest stretch of open ground near the town and didn't really seem to be all that well watched. The troopers had no issue keeping quiet and stealthy as they spread out in their squad and fire team units. Their lone sniper trained his sights on the head of an Innie in the church tower behind a large M247 Machine Gun, a lighter variant of the M247H. The Innies were still completely unaware of the presence of the approaching troopers as the Army troops got to within fifteen yards of the first row buildings overgrown with vines and grasses. The Lieutenant couldn't hand signal his men through the thick grasses, so he keyed his comm and whispered into it.

"Jackhammers, target the tower, on my mark. SAW's, will provide suppressing fire and move up once the first buildings are clear," Harrison calmly whispered, getting blue winks on his HUD acknowledging his orders. He peeked up through the grasses carefully to check to see how close he was to the nearest cover and the nearest Innie, he then ducked down and gripped his rifle and took one last deep breath, "Jackhammers now!"

On that cue a single trooper rose up slightly and shouldered his large double barreled rocket launcher. He took aim immediately at the tallest point in the town and pulled the trigger. The M41 SSR MAV/AW was the perfect weapon for the job at hand. Its 102 mm shaped charge warhead could level most standing structures its user needed to hit as well as penetrate tank armor and was known to bring down Pelicans on occasion. But for that thin metal spire it almost seemed like overkill. The dull report of the firing of the weapon was heard far and wide by everyone awake enough to hear it. The exhaust trail of the large rocket sped out towards the doomed tower and struck it right below the open window the Insurrectionists had set up their pillbox. The powerful explosion sent fire, bits of metal, wood, and pieces of the unfortunate Innie manning the post in all directions. Then the ripping roar of the three SAW's in the treeline came to life and sent tracers lancing into the town over the heads of the Army troopers as they ran forward in a crouch right into the town. Several Insurrectionists fell in the first seconds of the sudden attack and the others were too stunned to actively resist the well-coordinated assault. The first squad taking the middle of the target area split into two groups with two of the four man fire teams sweeping forward while the third made forced entry into the first building with flash bangs preempting their entry into the building itself. The second squad skirted around the edge of the town rapidly and came in from the right side of the main assault down the primary road into the settlement. Their rifles coughed out at a few Innies who came out of a single building in the middle of town and killed all but one in moments. The third squad went to the left on the initiative of their Sergeant seeing that the Innies were completely on their heels and would most likely make a break for the woods and caught three of them stumbling out of an old restaurant.

Building by building the Army troops charged through the town meeting sparse resistance. Their lone sniper picked off several Insurrectionists firing from windows farther into the town. The SAW gunners had hardly emptied their first magazines before they'd received orders to move up and join their squads as the battle started to heat up. The Insurrectionists seemed to be far more numerous than first anticipated and began to get organized as the Army troops successfully took more than half the town and closed in on the old town hall. The Insurrectionists fired from second and third story windows at the hostile UNSC troops who laid out heavy suppressing fire and stormed into the buildings occupied by the Innie fighters. Fierce room to room fighting erupted in the schoolhouse next to the church as two of second squad's fire teams stormed into the building. The Innies threw several grenades that wounded two of the leading troopers quite badly and forced the others to respond with equal force. Their squad leader tossed a grenade through a hole in a wall where the grenades had come from, hearing the panicked screams of the Innies and then the bang from the frag he'd tossed silenced them. Then he took a shot to calf from a single hostile jumping out from around the corner. One of his men let rip in response with his MA37 and struck the Innie several times in the chest and killed him instantly. The rest of the squad passed him by as they finished mopping up the rest of the Innies in the building and moved on.

With the successful clearing of the school that left only two buildings occupied by the Innies, the town hall and a warehouse next to it. Third squad took on the task of taking the warehouse while second and third took on the town hall. A pair of Jackhammers smashed the entire front façade of the building and made sizeable entry for the whole of first squad to enter the building and wipe out the eight Innies left alive. The Lieutenant himself led the charge into the building, and caught one of them getting up off of the ground and fired a burst into his side as the rest of his troopers secured the building. Several crates of supplied and some equipment were stacked against the walls and a few cots were laid out on the ground against the walls. The Army troops began to sift through the area, looking for any booby-traps or potential sources of intelligence as the sporadic gunfire from third squad's assault on the warehouse finished up the final three Insurrectionists.

The calls for medics rang out occasionally from troopers who'd been hurt, but thankfully, the Lieutenant didn't see any KIA on his HUD. The target area was secure, and the fight was over. Now all they needed to do was find the HPO that they'd been tasked to secure. He'd been told it was large, and hard to miss, so he knew that it was most likely stored in the warehouse which was now fully secure.

"Lieutenant," the leader of third squad called out on the radio, "We've found something that you may want to see sir."

"Copy that," Harrison responded, turning to walk out of the building with his platoon sergeant right next to him.

It didn't take long to reach the warehouse. The large doors were open and a pair of troopers stood guard outside and Harrison could plainly see the burn marks from flashbangs and the littered shell casings on the concrete floor. Several troopers had dragged the bodies of the few Innies who'd been killed here against the wall as the rest of the squad was standing looking up in awe at a large opened crate on the floor. It was massive, being mostly flat with the large circular object packed within being on its side. The large stone ring was intricately decorated with nine large red crystals arranged evenly on the stone ring with numerous strange symbols on the inner part of it. It looked like nothing the troopers or their officer had ever seen before.

"Nest, this is Snake Two-Five, authentication Alpha Delta three five one, come in over."

"Confirmed Two-Five," the radio crackled, "report."

"Have secured target area and neutralized hostiles. HPO is secure, repeat HPO is secure."

"Acknowledged Two-Five, backup and ONI science teams are en route. ETA is fifteen minutes," the radio said back.

"Nest be advised HPO is quite large, recommend heavy lift gear," Harrison replied.

"Acknowledged Two-Five, ONI was advised to the situation and has planned accordingly. Secure the area and wait for back-up."

"Copy that Nest, we'll be waiting."

The Lieutenant looked back at the large ring and furrowed his brow in deep thought as to what it could have been and why ONI wanted it. To him it looked like just a piece of stone with some big jewels on it. But then again, ONI claimed to have known about it, so it must not have been any ordinary piece of stone. So he turned and left the building as the rest of third squad began going through the other crates stacked around the large open warehouse.

The Lieutenant sat down on an old bench outside the warehouse and tugged off his helmet and laid it down and let the cool wind brush through his hair and let himself relax. He laid his rifle in his lap after turning the safety back on and watched his troops carefully going about clean-up. He looked up to the sky as several formations of Longsword Fighter Interceptors roared overhead, establishing a firm fighter umbrella. As he sat there the massive and unmistakable profile of a UNSC Paris class Heavy Frigate drew the attention of the entire UNSC platoon. The rumbling of its large engines droned out as it descended into the atmosphere and grew closer to their position. Several dots that were unmistakably Pelican dropships came into view and angled towards their position and circled overhead, looking for a good spot to touch down.

"Lieutenant? What in the world is this about?" his platoon sergeant asked as the impressive and rather over kill show of power went on overhead.

"I have no idea, whatever it is though, it's big."

Location: Epsilon Eridani System, Planet Reach, Menachite Mountain ONI CASTLE Base

Date: March 3, 2527

Time: 0300 Hours

The sound of heavy vehicles rolling through the tall mountain road to ONI's top secret CASTLE Base echoed out in the dark of the night. Three massive Elephants drove in a column with a pair of Scorpions and eight Warthogs in front of and behind the large vehicles. The front and rear Elephants were crammed with boxes and crates of highly sensitive material with their armored cover up and deployed with a full squad of ONI security troops manning the large vehicle. The middle Elephant had its roof off however, with its tall thin cargo chained firmly in place as it rolled along with another fully outfitted squad on guard manning several heavy machine guns. The two Scorpions and eight Warthogs were manned by UNSC Marines, who were only told that some classified cargo needed to be escorted through the tall mountain roads to CASTLE Base. Overhead was a flight of eight Hornets and a flight of eight Falcons carrying even more Marines. The convoy had set out three hours ago and met up with a few prepositioned tankers to refuel the lumbering behemoths quickly and efficiently.

The convoy finally rounded the corner and caught site of their final destination, a massive twelve foot thick titanium door with a half dozen automated defense turrets and missile pods scanning the skies. There was a large force of ONI security troops in place at the entrance, awaiting the precious column's arrival. The convoy came to a halt at the gates where an outpost sat in place and a deployable barrier built into the road was deployed. The ONI Major at the checkpoint walked out to greet the arriving column and caught site of the Colonel that was in command of the column. He was dressed in a common black utility uniform with his insignia in gold on hardened shoulder boards on his upper arms. On his thigh he had a Magnum and several spare magazines. The Major saluted him instantly as he walked up to him.

"Colonel sir," the highly disciplined officer said immediately returning to ease once his salute was returned, "I'm going to need a palm print and voice ID to authenticate your arrival sir."

"Very well Major," the Colonel said, following the Major into the steel checkpoint building.

"Follow me please sir."

The two men walked into the large building and went up to a palm scanner where an A.I.'s voice called out, "Identification required, please place your hand on the scanner as shown."

The Colonel placed his hand on the scanner as prompted, and with a quick scan and a small prick on his pointer finger from a blood sample to verify his own DNA the screen blinked green.

"DNA and Hand Print scan complete. Vocal authentication required, please speak your name rank and service number as prompted," the cool male voice of the A.I. ordered.

"Thompson Robert, Colonel, Service Number 452-23-2549."

"Vocal Identification authenticated. Welcome to CASTLE Base Colonel Thompson, new waypoints have been uploaded to your column. Please proceed to waypoint Alpha and await further orders," the A.I. responded after three seconds.

The Colonel nodded and followed the Major out of the building and proceeded back to his own Elephant where he'd been riding in the command center on the bottom level. The barriers lowered at the ordering of the Major and the column rolled forward past the company of ONI security troops who stood with eyes vigilant for any sign of trouble. The Marines in escort looked around at the show of force they had arrived in and allowed their thoughts to wander to the reasons for such security. The flights of Hornets and Falcons peeled away at the orders of the flight control director for CASTLE Base and made a beeline for their home bases near Azod.

The column proceeded into a large spiraling road that took them down deeper under the imposing granite fortress of Menachite Mountain for several hundred feet until they came to a garage with several large loading cranes on the ceiling and a large flatbed in front of a very large elevator that was situated in the back of the garage filled with security. The Warthogs and Scorpions were waved to a smaller branch garage and the Elephants were directed to position themselves directly underneath the large cranes. The most important one of these vehicles, the center vehicle holding the tall thin armored crate was ushered forward and the yellow warning lights signaling the activation of the overhead cranes went off and a shrill alarm sounded out as the crane carefully maneuvered to grasp the unchained crate. It strained to lift the heavy object and the Elephant was ushered to back up and the rolling flatbed was moved in to replace it. The crate lowered down onto it, and more chains were fastened onto the object to secure it before the flatbed was moved forward into the gaping elevator. The armored doors shut tight as the flatbed settled in place.

With a gentle jolt the massive elevator started descending into the very depths of the heart of the base where a massive complex of titanium and reinforced concrete barracks, labs, passageways, barracks, and armories awaited its crown jewel. The massive project was veiled in a layer of secrecy greater than the Spartan Program. Hardly anyone even knew of its existence, not even Dr. Halsey who was perhaps the brightest mind in the UNSC had even the slightest inkling as to its presence within spitting distance of her Spartans' Training Facility.

Its name was soon to be known as the Stargate Program.

And there's the first chapter. Hope you guys enjoyed it thus far. Please leave reviews so that I can have an idea what you all think of it so far.

Next Chapter Preview: The UNSC takes its first fateful steps into a large and dangerous galaxy through the wormhole.