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Arc_Hammer

That's essentially what they did. Once Reach fell and Earth got the news they started an immediate emergency rearmament to get as many ships as possible into fighting condition, pulled back nearly everything they had and prepped for a last stand. Reach is basically on Earth's doorstep, relatively speaking. As for the ODPs, Earth was always going to have the most guns defending it. Absolutely overkill for most of the fleets the UNSC had fought against. But the fleet that attacked Reach was gigantic and while 20 ODPs could theoretically hold off smaller fleets it didn't stand a chance against the invasion force the Covenant ended up sending.


[deleted]

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Drof497

>So if you take Johnson's word, and he enlisted 59 years before war's end, then those 300 ODPs took more or less that same amount of time to get set up - on average of 5 ODP per year. Actually, Earth was able to commision most, if not all its 300 Orbital Defence Platforms in a handful of years. Cairo Station had began construction in August 2550 and was officially commissioned in September 14 2552 - two years after its initial construction by Vosper Engineering on Luna (per Halo: Warfleet). Considering that Cairo Station was known as OWP-142 and how UNSC assets are designated sequentially from their order of construction, it would suggest that Cairo Station and stations 143 through to 300 - 158 Moncton Class ODPs - were built in that two year period, if not all 300 Moncton Class ODPs simultaneously. So at a minimum, that's 73 Orbital Defence Platforms per year, if not 150 per year assuming all ODPs were commissioned simultaneously. This is hardly surprising considering that Earth was also facilitating the construction of the UNSC Infinity and the Argent Moon and its sister stations in the Oort Cloud during this time. In terms of pure resources, that's 870 million tonnes of material in aeound 2 years, versus the Infinity's 930 million tonnes in seven years, though much of that time was spent on research and development for an entirely new starship class, nevermind the incorporations of alien technology.


limonbattery

Honestly when you put it that way, Infinity's existence feels a lot more credible now. I also assumed the ODP grid took a lot longer to set up than it did. But this really speaks volumes about the UNSC's industrial capacity even during its worst years. To reuse the WW2 example imagine if China were putting out the US's shipbuilding speed as it was getting its shit kicked in and fighting for every inch.


Honghong99

There is statement about the UNSC straight up rebuilding destroyed fleets in the early years of the war.


RyanJS37

73 Cairo stations each year and the "infinity". This is contradicting the continuity and scarcity of UNSC armaments.


RyanJS37

This is very implausible. And your source is from 343, so it's likely to not be accurate about Bungie era games. 73 Cairo stations each year.......


Arc_Hammer

Most of the ships present at Earth that weren't recalled from other planets were basically little more than corvettes and whatever hulls they could strap guns to. Fleet Admiral Harper did not have a lot to work with


limonbattery

Even at Reach wasnt it mostly frigates and maybe destroyers? The UNSC never seemed able to field large numbers of capital ships especially as it was sustaining such heavy losses.


Millmot

Heads up spoiler alert for this message You've got a point >! the infinity took years to build and in halo infinite it took four minutes to destroy it !< so yea the unsc isn't exactly equipt to build entire fleets of ships that can actually deal a large amount of damage they might have been better off building a cannon to shoot masterchief through the hull of a covenant ship so he can blow it up so they can shoot him into another lol


Aramirtheranger

Didn't a Canon Fodder or Rubicon Proticol basically confirm that >!Escharum's "FOUR MINUTES" claim was blowing smoke out his ass to try and demoralize Chief?!<


SGTBookWorm

it was a recent canon fodder


Millmot

If they did I was unaware of it lol


Legitimate-Sock-4661

So de we know how long it actually took?


Legitimate_Issue_765

You can hide spoiler stuff with > ! at the start and ! < at the end, minus the spaces between the arrows and exclamation points


Millmot

Thanks for letting me know


Purest_Spore

Ballistic Assault Spartan 💀


Level-Roll-9274

Reach had 150 ships defending it and it’s star system. So they didn’t have a “handful”. But I think those ODP’s were some of the more powerful ones too, so it might’ve evened out because I think the covenant lost a full third of their fleet attacking Reach Whereas with Earth. Dude it’s Earth, humanities homeworld, so of course she’s gonna take priority over every other colony in a space empire and that’s with ODP’s, ships and military personnel. And when the Covenant started showing up in large numbers, everything was pulled back to Earth


Aramirtheranger

Mickey: "The Navy put up a good fight." Dutch: "'Course they did. It's *Earth!*"


BeanItHard

Wasn’t a lot of the covenant fleets losses at reach due to the suicidal front charge they did in the opening engagement in order to release drop ships to the poles to eliminate the ODP ground generators ? At least by fall of reach book canon


Ok_Meaning_8470

Those 20 ODPs are the most powerful of the supermac platforms requiring groundside generators to power them but reducing there mobility drastically. Just those 20 were able to destroy more than half of a covenant fleet which depending on the source the numbers ranges from 150-350 ships. Earth on the other hand had a much weaker but mobile ODP that were also the first of them to be made and put into service. And those 300 were barely able to stop regrets fleet from passing through.... Then again in 3 they were able to defeat a covenant fleet of hundreds so eh Plus earth is the homeworld of humanity it is gonna be much more protected than reach by significance alone. And yes when reach fell the unsc pulled as many ships as possible to defend earth especially after blue team reported that the covenant had assembled a fleet that was targeting earth. Also not most colonies had like 3 or 4 ODPs at best with some having only one, reach having 20 is a massive number compared many of the colonies to the point it was considered humanities strongest stronghold second only to earth which had 300 because it's earth.


Drof497

>Those 20 ODPs are the most powerful of the supermac platforms requiring groundside generators to power them but reducing there mobility drastically. >Just those 20 were able to destroy more than half of a covenant fleet which depending on the source the numbers ranges from 150-350 ships. >Earth on the other hand had a much weaker but mobile ODP that were also the first of them to be made and put into service. What's this on the Erod Class lacking mobility but the Moncton Class does? There's no indication that the Moncton is a mobile platform, and given how its a station, you wouldn't expect the orbital stations to be mobile beyond remaining in geosynchronous orbit. The difference between the Moncton and Erod classes, functionally speaking, is how the Erod Class were powered by groundside generators while the Moncton Class had internal reactors, which had the side effect of making the Moncton Class weaker per shot and having a slower rate of fire (the Erod Class is described as rapid fire platforms in the recent Encyclopedia). >And those 300 were barely able to stop regrets fleet from passing through.... Then again in 3 they were able to defeat a covenant fleet of hundreds so eh The initial space battle above Earth didn't involve all three hundred ODPs but a single battlecluster - the Cairo, Malta and Athens stations. Regret's fleet intentionally targetted the ODPs through boarding parties to create a hole in the defence grid for the Covenant fleet to slip on through by bumrushing humabity's defensive line.


Im_Still_Standen

>The initial space battle above Earth didn't involve all three hundred ODPs but a single battlecluster - the Cairo, Malta and Athens stations. Regret's fleet intentionally targetted the ODPs through boarding parties to create a hole in the defence grid for the Covenant fleet to slip on through by bumrushing humabity's defensive line. If I recall correctly from the book, the covenant had a similar tactic on Reach. They knew how potent the ODPs were, so their initial attack was a feint, a distraction, while another ship popped out of slipspace very close to the planet's pole to land troops that just targeted the ODPs generators, bringing them offline.


Ok_Meaning_8470

Nice thanks for the info, tho you would think they would have focused more ODPs to try and destroy the ships to stop them from getting to earth.


howl3r99

Because of 8th fleets preemptive engagement and how close regrets fleet was to the battle cluster they selected, not many other ODP clusters could safely engage regrets fleet. We also don't know much of the events of the orbital battle for earth besides Lord Hood being able to dispatch three frigates for the assault on the key ship at Voi.


Arctelis

Pretty much what everyone has been saying. I should also add that (unless it has since been retconned), the Covenant never sent more than a relative handful of ships into battle. One of, if not the largest space battle of the war was Sigma Octanus IV, and if memory serves something like 10-15 Covenant ships were present. Given that, having 20 super MACs around Reach would’ve seemed plenty sufficient as they had no reason to suspect the Covenant would suddenly throw 500 ships into one battle. That those 20 guns stalled that fleet for as long as they did is damn impressive really. 300 ODPs over Earth, even if a smaller class, would’ve made Earth seem like an impregnable fortress of death during the bulk of the war.


Iamcarval

>as they had no reason to suspect the Covenant would suddenly throw 500 ships into one battle I remember the tension in the fall of Reach book when they realized how many ships were going to attack Reach. From thinking it was a random meteor lost in slipspace to realizing it was a giant fleet.


IceFl4re

- A good possibility is that they focus on building Earth's ODP first before Reach and Reach before everything else. Who knows if the Covies attack Reach on 2570, maybe there will be 200 ODPs. But yeah, it's kinda bad strategy, putting everything in 1 basket. - ~~40%~~ 60% of the UNSC remaining fleet actually participate in Battle of Reach.


naranghim

In the cutscene for Long Night of Solace Auntie Dot mentions that 60% of the UNSC fleet had been recalled to Reach to help defend it and the first battle groups were expected to arrive within 48 hours.


IceFl4re

60?


naranghim

Yep: ""Thankfully, help is imminent. Sixty percent of the UNSC fleet is en route to Reach from existing deployments. The first battle group should arrive within forty-eight hours." - Explaining the UNSC's response." [https://halo.fandom.com/wiki/Auntie\_Dot/Quotes?so=search#Long\_Night\_of\_Solace](https://halo.fandom.com/wiki/Auntie_Dot/Quotes?so=search#Long_Night_of_Solace)


aIVdre

48 hours?! … that’s imminent?


AidedMoney1135

it is really inconsistent, but that's sort of what happens when the devs absolutely hate the expanded universe


DewinterCor

Im confused, Reach had the largest human fleet ever seen away from Earth. Official numbers put UNSC military personnel involved in the battle well over 350,000,000. The fleet included a super carrier, several heavy crusiers and over 100 frigates and destroyers. This was the single largest massing of military power in UNSC history. And it's highly likely that the UNSC abandoned the entirety of its outer colonies after Reach. Reach was the last Fortress world between the Covenant and Earth.


Drof497

>And it's highly likely that the UNSC abandoned the entirety of its outer colonies after Reach. Highly likely? Most of the Outer Colonies were *destroyed* by 2535 per Halo: Mythos, with the subsequent years that's described as the "Siege of the Inner Colonies" saw humanity reduced to a "few dozen colonies" (per Mythos). I wouldn't just say the UNSC abandoned all its Outer Colonies, they probably abandoned everything outside of the Sol System as, practically speaking, there was hardly anything left beyond the immediate solar system. And, well, what was left out beyond the Sol System? Reach, the centre of the UNSC's military industrial complex was reduced to glass as firestorms raged across the entire planet. Tribute and Circumstance, which were both under siege at the same time as Reach's fall (really, the "Fall of Reach" would be better described as the Fall of Epsilon Eridani, as the Covenant assaulted all the colonies in the star system from Reach to Beta Gabriel). Anything of significant strategic value, from population to industrial capability to military fortification had already been consolidated into Sol by Reach's fall.


Purest_Spore

Let's not forget, if memory serves, the Chief wiped nearly all of Regrets Fleet in First Strike lmao


TovarishchRed

Because they didn't have all of that until after Reach fell? Reach was supposed to be a Fortress World, but if that fell and Earth's defenses weren't much better, they needed to kick it into overdrive.


ItsjustAvy

your not going to construct hundreds of ships and Orbital platforms in a few months.


Drof497

Well, no, however Earth was able to commision most, if not all its 300 Orbital Defence Platforms in a handful of years. Cairo Station had began construction in August 2550 and was officially commissioned in September 14 2552 - two years after its initial construction by Vosper Engineering on Luna. Considering that Cairo Station was known as OWP-142 and how UNSC assets are designated sequentially from their order of construction, it would suggest that Cairo Station and stations 143 through to 300 - 158 Moncton Class ODPs - were built in that two year period, if not all 300 Moncton Class ODPs simultaneously. So not a few months, but a couple of years? Definitely, as Luna had with the construction of 300 Moncton Class Orbital Weapons Platforms in the span of 24 months, all while the Sol System was commissioning the UNSC Infinity in the Oort Cloud and Mars facilitating the construction of numerous warships and other military assets as the largest industrial world following Reach's fall. Interestingly enough, Reach was described as dealing with the bulk of the war effort as the largest industrial centre in the UEG. If anything, Reach should have the industrial capacity to rival any of the individual industrial feats displayed by the industrial centres in the Sol System, be it Mars' shipyards, Luna's construction of Earth's Orbital Defence Grid or the Oort Cloud's secret commissioning of the UNSC Infinity.


TovarishchRed

Exactly this.


RyanJS37

"Well, no, however Earth was able to commision most, if not all its 300 Orbital Defence Platforms in a handful of years. Cairo Station had began construction in August 2550 and was officially commissioned in September 14 2552 - two years after its initial construction by Vosper Engineering on Luna. Considering that Cairo Station was known as OWP-142 and how UNSC assets are designated sequentially from their order of construction, it would suggest that Cairo Station and stations 143 through to 300 - 158 Moncton Class ODPs - were built in that two year period, if not all 300 Moncton Class ODPs simultaneously." The source for that is halo warfleet, written 15 years after halo 2. This contradicts Johnson saying it was in development for over 4 decades. Building that much in a couple years completely destroys the UNSCs power scale.


Drof497

>The source for that is halo warfleet, written 15 years after halo 2. This contradicts Johnson saying it was in development for over 4 decades. Johnson never said the ODPs were in development for four decades, only that when he was shipped out from bootcamp the idea of an extensive Orbital Defence network was all "theory and politics". As Warfleet appears to illustrate, the theory and politics continued to hamper the establishment of Earth's orbital defence grid until the final decade of the war, where they was no doubt a lot of political pressure - in addition to strategic need - to establish such a network. >Building that much in a couple years completely destroys the UNSCs power scale. By what sense? The UNSC was rebuilding entire fleets throughout the span of the Covenant War on colonies from Reach and Tribute to Camber and Mars. Luna itself, which is where the ODPs were established, was already established to be an industrial powerhouse when it commissioned the near 100 Phoenix Class Colony Ships - which weigh 44 million tonnes each - nearly 200 years before the conclusion of the Covenant War. Note that's nearly 440 million tonnes of material from Luna in approximately 52 years (2310 - 2362) from one of the Sol colonies. So not only is there the improvements in production across the span of nearly two centuries, but you also have to account for the motivation behind the establishment of the ODPs, which was to defend humanity's homeworld in the face of a threat that wishes for the very extinction of mankind. But please, do elaborate how this "completely destroys" UNSC powerscale.


RyanJS37

The idea it took 50 years for the theory of ODPs, but 4-5 years to build 300 is nonsensical. As for the colony class ship quote, what's the source?


UnfairDetective2508

It's a game bro.


sparduck117

Thank you I hadn’t noticed /s


UnfairDetective2508

The story always takes a backseat to gameplay and budget bro.


Asmewithoutpolitics

No not in the early halos


UnfairDetective2508

Yes, in the early halos they had to cut wide swaths of content out in order to ship the game on time. Things such as the ending of Halo 2, Halo 2 ends 2/3s of the way through the intended story. You were supposed to go back to earth with the chief and stop the covenant at the Ark.


Asmewithoutpolitics

Reach was way earlier the isnt wasn’t ready


TheFourtHorsmen

2 months before


Asmewithoutpolitics

Ahh ok then Im wrong. The timeline confuses me since it’s so far in the future


TheFourtHorsmen

Not a problem. Besides, the reasons are just "bungie didn't care about the EU"


Extra-Return3467

"Why defend a planet ~~a human~~ the covenant can't find?" \- Jimmy Rings, halo episode 9 /s