A.N. While this story is mainly a crossover between the two listed above, there will be a few characters from other anime that are included, just to spice up the cast. It will likely increase longevity of the story overall. The odds are evened out slightly as the previous Covenant battles will be in favor of the Covenant, with the UNSC having heavier losses, while Covenant having minor.

Infinity

"Damn it. Order all remaining units to retreat, this isn't a fight we can win right now. Relay the coordinates to the fleet, activate emergency slipspace before we're found again."

"Right away Captain. Arrival to destination in 1 week, I suggest that we focus on repairs and resupply in the meantime."

Planet 4546B (1 week later)

"Captain, we appear off course from our original trajectory, slipspace sequence wasn't fully completed due to engine failure. I'm attempting to locate our position…" Roland continues searching through the logs of the many planets discovered and tries to match similar attributes.

After a few moments, he sighs lightly, "Finally, alright, so we're above the planet "4546B," this was only recently discovered, we don't have many details, we only know its designated name. Running scans of planet now, this'll take a few minutes."

The Captain sighs and sits down, "Thanks Roland. Tell scout units to deploy once your scans are done, we need to find out what we're working with here." rubbing his temples, "And someone get me a coffee."

Over the intercom, an AI says, "All available scout units report to briefing room." A few people out of the crowds of the mess hall head towards the checkpoint, others going about their business or heading to the checkpoint from other areas of the ship.

Lasky gets up and heads towards the briefing room as well, speaking once everyone arrives, "All right, as you may or may not know, we are currently above a foreign planet. We ran quick scans indicating safe air and geology similar, if not the same as Earth's. We will be sending in drop pods to find as much information as we can. That is all, dismissed and good luck."

[Pods 1-20: Ready for deployment] "The light is green scouts, prepare to drop in; 3, 2, 1…"

A few minutes go by before the pods hit ground, all scouts gathering at the rally point upon landing, further dividing up into fireteams. The lead scout speaks up to the group, "Use drones, we don't to alarm any people, if there are any here, that is. Permission to fire on hostile lifeforms, everyone move out!"

Yokosuka City

"Captain, I've detected disturbances in the atmosphere, recommending investigation 100 miles north from this location."

Gunzou shifts his screen to the mapped location, "It is unlikely that it's of Fog origin, those coordinates are on land. It could just be some debris from old shuttles, but it's worth looking. Iori slow engines and back to port, we're gonna investigate." Iona saying she'll stay ship bound, meanwhile, Gunzou and co. move towards the location.

After a car ride to the forested area, they continue north. From the brush, a voice could be heard, "Area restricted, state your purpose."

Gunzou replied calmly, "You should come out and talk to us eye to eye before asking us for anything."

"Alright," a man clad in green armor, appearing to be similar to a bulletproof vest, walks out into the open.

"So who exactly are you, I haven't seen type of armor around before. Wearing a bulletproof vest in the middle of a forest is quite unusual. Clearly you don't come from here."

He paced around slightly, "I can't disclose any information myself, bringing to my superior is required now that you know of us however."

Gunzou looked at him skeptically, "I can work with that, on the condition that you get us a ride back to my sub at the port and pick up my crewmate."

He puts his fingers to the side if his helmet, "Get a pelican over here, we have friendlies on land that know of our presence. They don't appear civilian, they own a submarine. Likely ties to government military."

Gunzou chimes in, unknowing of what a Pelican is, "Pelican? What's that?"

He replied simply, "You'll see soon enough."

A few minutes pass in silence, until a large, green ship approaches their position, "That's a pelican, and it will be our ride to where we gotta go, follow my lead and get on." Everyone follows the scout onboard, and the ramp closes upwards.

The pilot asks, "We going straight to Infinity or elsewhere?"

"To the nearby port, we had an agreement to get their comrade there." Flying towards the location, the scout says, "So, who we picking up?"

Gunzou says, "You'll see."

Upon reaching port, Gunzou and co. get out, walking down the ramp to port, facing the blue submarine. "Iona! Hop out here, will you." The sub activates, recognizing his voice, the markings glowing a lighter blue color. A moment before she walks off her sub, nanomaterial stairs form, allowing her to reach the dock.

The scout stares in awe, "She's not human I take it?"

Gunzou nods, saying, "She's of Fog origin, but she was only given the order to go under my command, according to her. Since we met, we've had quite the journey to defeat the Fog. We can go over more details once we all meet where you wish to take us." Everyone boards on, and the pelican heads upwards quickly, towards the atmospheres' end and into space.

Gunzou and his crew have their eyes glued to the window, "That's most definitely a spaceship, right? It's enormous, far bigger than anything we've built on this planet so far."

The pilot says over the speaker with a slight chuckle, "Prepare for landing, and yes, that is a spaceship."

Once on-board, the scout and 1-401 crew are greeted by a man in black military clothing, containing many pins of achievements. "Oh, Captain Lasky, I didn't expect you to meet us at the vehicle bay, are you escorting us?"

He motions to follow, "That I am, we have guests from another planet similar to our own, and considering I'm Captain, it only makes sense to greet them." The signs lead to a few debriefing rooms, in which, they head to the farthest one that isn't occupied.

Gunzou speaks up, asking, "So, you're going to tell us what exactly is going on, correct?"

Lasky picks up and straightens a few files, "I plan on telling you what I can." Everyone takes a seat and gets comfortable, a few waters on the table for anyone that wants one.

The tension in the room is rather high for everyone, even Iona, as she has little control of what goes on in high space considering she's a sub. Lasky starts off the conversation, "So, from the intel we have, you recently defeated sentients called the Fog, considering how humanity seems at your ports we could assume as much."

Gunzou nods, "Yes, currently they are free from the "Admiralty Code," which forced them to attack humanity. Things had settled down by this point, and alliances had been made, but tensions remain high. Humanity is at the stage of rebuilding, so hopefully these tensions go down."

Lasky asks, "Roland, you got all that?" He appears on the table with a thumbs up.

Gunzou asks Lasky a question now, "So what's your guys story for being here?"

Lasky being prepared for a question like this, opens up a file briefing everything that has happened so far. The tables' holographic display activates and shows pictures of events and text as support. "So we're a humanity from another planet, extremely similar to this one in fact, but are ahead of your current technology. We're still in a galactic war against the Covenant, an alien force that opposes us. Eventually they overpowered lots of our forces at one of our colonies, and we had to retreat to another set of coordinates. However, our slipspace engine faulted from damages and we landed at a different location, that being this planet."

Iona, intrigued by the mechanics, asks, "What's slipspace?" Gunzou and his crew are surprised that she said anything, but were also curious to what it was.

"It's our faster than light travel device, derived from a civilization with even higher technologies than ours. They've become more active with a recent AI betraying us, quite the threat on top of what we're already dealing with."

Gunzou sighs, "So it seems that humanity, even in space, is having problems with an enemy."

Lasky nods, "We still need supplies and resources too from the battle. What's the status of your government at the moment?"

Gunzou replies quickly, "The governments are regaining their lost power fairly quick, should you want to meet with them, there shouldn't be any issues."

Lasky nods, looking at Roland, "Roland, schedule an immediate audience with Japan's government, this may be our chance to resupply freely and also help if necessary."

Roland salutes before disappearing, "Right away."

Lasky gets up, picking up the files and handing it to Gunzou, "In the meantime, I suppose you guys could look at these while we get a pelican ready for transport back to surface. The files are just a paperized version of what we just talked about, with a few extra details here and there."

Gunzou takes the papers and hands them to Iona, "Datalog this please." she nods and everyone heads back onto the Pelican back to Earth. Shortly after landing, the groups split apart and go about their business.