The Infinity couldn't wait any longer as the UNSC forces were being slaughtered down there, they were being hold by the Strogg as they were advancing, using their Strogg tanks and flyers not to mention this large two legged Cyclops with two large rocket launchers attachment to it that just took out a Scorpion tank causing the UNSC forces to fall back and take cover as it started to press forward.

A Spartan was inside a Pelican firing off a rocket launcher towards an Anti personnel turret before making a jump down on top of the Cyclops while it keeps moving, he places two explosive charges on both sides of the arm of the rockets before jumping off to deal with the tank, once he hits the ground the bombs exploded causing the Cyclops to still stand but the weapons were still intact, two marines had rocket launchers and was about to fire towards it but it fired back at them taking out the two marines with the rocket launchers.

Master Chief got close to the fight noticing a Grizzly Tank nearby, lucky for him no one was nearby so he decided to take a ride on this new powerful vehicle to fight against the Strogg. The Spartan tried to retreat back to the others but then it took a hit in the back with a Rail gun sending him falling to the ground dead as the marines try to fight off against the Strogg forces, they fired rockets towards that tank but they missed and the one who fired got shot a couple of times and that tank would open fire taking out three marines, only a few remains.

The Grizzly tank comes around the corner aiming it's two barrel cannon towards them and fires, blasting down that Cyclops causing it to fall on the ground then he fired at the Strogg tank for the marines to press forward, soon the only thing that was left were one Gunner and a couple of weak infantry guards, with that the marines presses the attack shooting the Strogg as they retreat and four marines would run over to the Grizzly to sit on the sides before he moves forward firing another shots towards them obliterating the area, one marine fires a rocket launcher taking out one of their turrets as they move forward. On the way over the field they did notice this planetary cannon still firing, if they take it out then more ground teams from drop ships can be deployed here if possible so Master Chief moves as close as he can get before jumping out of the vehicle and lets someone else take it for him to get in there and see if he can operate that gun, carrying only a battle rifle and a grenade launcher, he runs along the side with some marines seeing a defence turret nearby but the Grizzly took care of that as he keeps running.

"Just what exactly you going to do with that gun anyway?" Cortana said as Chief keeps moving

"You will find out." He looks down seeing a trench around the front entrance inside the base that controls the gun; he opens it up and walks through holding his battle rifle ready.

He runs through another door noticing a Strogg Grunt standing by with two guards, he switches to his grenade launcher and fires towards them taking out the guards while that grunt started to get the rage, charges towards him he switches to his battle rifle and his marines would open fire, taking that grunt out before it got close to them.

There was a small lift nearby seeing a guard walking out of it, he quickly grabs him and aims his rifle at the neck and fires through the chin through the head then kicks it back to the ground. He goes up the elevator with the marines, he switching to his grenade launcher walking to the planetary cannon seat there he spots a berserker and a gunner standing by noticing him then the berserker charges, he fires his grenade launcher at the berserker while the other marines fire nearly all their rounds at that berserker, it got close by hitting one of them with a lightning shot hurting one of the marines but Chief shoots it dead, that Gunner started shooting at the wounded marine killing him and taking out another marine as he took a nail to the face, Chief switches to his grenade launcher and fires towards him, soon the Gunner dies and only one marine was left that would watch his cover.

Chief walks over towards the seat "I hope you know what you're doing..." Cortana said to him

"I know what im doing." He sits down on the seat then it turns around and giving him the things he needs to operate the gun.

He's got the front view of the gun aiming in the sky noticing a Pelican inbound but got shot by a flyer out of the sky, he moves the gun down and turns it to the side noticing a strong defensive door that would be hard to breach through, the only way to get through and to reach that Big Gun, he did spot that Grizzly moving around with whats left of the marines taking out another tank and two more defences noticing the Grizzly lighting on fire but still intact. Chief would open fire sending out two large blue cannons towards the gate once they move out of there, blasting it right open causing a massive explosion, once the smoke was clear the marines started to press forward through there, with only some of them left and that Grizzly tank still intact for now it won't be long before they call for reinforcements but with the flyers around and their defences around it would be difficult to get a landing party down there.

Chief turns the gun around and suddenly a few fighters open fire blasting down that defensive cannon causing the sight outside to go black, he couldn't use the gun anymore so he quickly got out of there with that one marine before this place goes down.

Outside a Pelican made it out of the fight and started to deploy some troops on the ground, another Pelican would deploy a Warthog nearby and some marines attach with a Gauss gun on it, they start to drive off elsewhere to the hanger to help and find any more UNSC soldiers, a couple of marines and ODST stays with Master Chief as he comes outside and they would all go after the Grizzly tank.

The marines moves forward trying to contact the other front marines but they can't hear anything or find anyone but they did spot two dead marines on the ground, no gun fire is going off in the distance so they could be further ahead so while they double time. Back at the hanger the two Spartans and two ODST soldiers stands in cover as the Strogg are holding them off, two Gunners and a light tank stands between them and their goal to take care of the hanger that still holds hundreds of more Strogg Fighters, one soldier runs forward shooting his DMR but he got shot in the chest right in front of that female Spartan, she looks over seeing more Strogg coming causing them to retreat and regroup as they can't get through.

Back to the tunnel to Big Gun they finally regroup with the UNSC forces; stuck in front of a giant door once again but they notice Master Chief coming with reinforcements coming, one of them gets off the tank and walks over towards him. "There he is what took you so long?"

"We need to get through here but we can't break through this time... unless you brought that cannon of yours." He looks back at the door

Chief looks over to the door nearby that could be open then back to the others "Press the attack once the door is lowered, I'll catch up."

"You better catch up." He turns back and the marines Chief brought stays with them while he goes on ahead through the door to see what he can find.

He keeps moving through the path and notices some Strogg infantry in the way, one Gladiator stands before him so he fires his grenade launcher towards it, holding the trigger down to make the blast become an EMP bomb causing the shield to break for him to switch to his battle rifle and fires but he ducks for cover as it fires its Rail gun then started to move forward shooting its blaster while Chief gets into cover but two ODST's runs forward shooting at that Gladiator throwing two grenades on the floor soon taking out that Gladiator.

Both of them would reload "Thought you could use a hand Spartan. Try and keep up." Both of them run past him while they finish reloading, heading to the left to fight the Strogg guards

While they were still going the two Spartans that were trying to blow up the hanger failed miserably, heading outside and regroups with the marines nearby with that Gauss Warthog, the female Spartan looks back seeing the other Spartan get hit by that Light tank killing him as he didn't recharge his shield, once he died that tank inside would do a victory pose, crouching on one knee and punching the ground with its cannon. With the hanger under attack the fighters would start to deal with the air forces in the area, taking out some Sparrowhawks and Vultures and Pelicans while the Long swords and Sabres still fighting above but they can't hold out much longer, i don't think they can use airstrike on Big Gun.

Del Rio would look out the window seeing a squadron of fighters coming towards them; he would close his eyes for the moment then looks over to Laskey "Laskey... get as many people as you can and get them off this ship..."

"But cap-"

"Do as i say damn it... go!"

"Yes... i understand sir... was a honour sir." He runs out of there and so do the others, the ship is still offline due to Big Gun and it's EMP blast and with no defences that flagship they didn't destroy is back online and is coming their way ready to finish that fight.

Laskey and those who can escape follows him to the hanger to get onboard the rest of the drop ships and small ships inside, getting as many people as they can before that flagship open fires, they don't have enough to get everyone off this ship but they have to escape no matter what and they need to escape Stroggos and warn the UNSC what has happen here.

Elsewhere back on Stroggos Master Chief and the two ODST storms the control area and shoots the blue rods like last time, causing a blackout for now then once that was done they started to head out of that area noticing the Grizzly and the marines gone with that they started to pursue them to try to find them to catch up and join the fight.

"Chief..." Cortana said to him worried.

"What is it?" he said as he keeps running with the two

"There's a large group coming... we have to hide..."

Chief stops for the moment and so does the marines, they did started to hear this loud footsteps coming towards them, they look out to the end seeing another path that leads to the right hearing the footsteps coming closer, coming towards them.

"We have to hide..."

"But what about the rest of the marines?"

"There probably dead." He looks around noticing an area on their left that would be perfect to hide for now. "Let's go." He runs towards it seeing some crates and barrels that would be alright for them to hide for now.

They would follow him and gets into cover, Chief would look out as it started to get closer knowing what the hell is coming towards him, more Strogg infantry would appear moving in two lines, almost eighteen of them walking down the path, they were different than any Strogg they have ever seen, they look like the marines holding UNSC weapons and their armour was orange, covering most of their body while the rest were flesh all marching together out of there but once they were all in the sight a large four legged spider called the Harvester would move forward with the Strogg, they didn't see them and soon more Strogg would march towards the front lines, almost four Gladiators and more of those Strogg infantry carrying UNSC weapons.

Once this large group marches out of there Chief and the two marines gets out of cover watching them heading to the front lines. "That's a large strike force..." one of them said

"That's no strike force... that's a kill squad, they're going to kill all the marines on the ground..." he looks at Chief "What should we do?"

"We can't retreat... we have to press forward, we have to disable Big Gun so the Infinity can fire an airstrike towards that weapon." He turns back and walks forward heading to Big Gun.

The two soldiers look at one another but they would just have to hope that the ground teams can hold off against another wave of Strogg. Most of the ground forces that lost contact manage to get a signal out to the others, causing them all to get out of there by retreating inside a factory they took over and hope they can stand against the Strogg attackers, only thirty marines, couple of ODST and three Spartans left on the ground it's going to be hard to deal with the Strogg that is pressing the attack against them to retake the factory, the end is almost upon the UNSC and they don't know whats going on in space.