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 Sir Samuel Buca wrote:
If any other Captain were to take command, it would be Fabian, he's a hero of the chapter. Ventris is barely out of the 10th company, he is the least competent, most unorthodox, least decorated, youngest, captain in the chapter

Captain Fabian is a very good shout, Captain of the 3rd, has the first recorded kill of a Hive Tyrant in close combat(held jointly with 3rd Company dreadnought Severus IIRC). I also think Captains Galenus of the 5th, Epathus of the 6th and Ixion of the 7th would also be considered in the circumstances. Maybe Galenus slightly more than the other 2 as he is a Battle Company Captain and the other two are Captains of reserve companies. That being said all 3 of them were serving Captains before Fabian got his promotion and succeeded Ardias so maybe they might be considered before Fabian due to their longer service records.

 Adamski Alders wrote:

 Sir Samuel Buca wrote:
If any other Captain were to take command, it would be Fabian, he's a hero of the chapter. Ventris is barely out of the 10th company, he is the least competent, most unorthodox, least decorated, youngest, captain in the chapter

Captain Fabian is a very good shout, Captain of the 3rd, has the first recorded kill of a Hive Tyrant in close combat(held jointly with 3rd Company dreadnought Severus IIRC). I also think Captains Galenus of the 5th, Epathus of the 6th and Ixion of the 7th would also be considered in the circumstances. Maybe Galenus slightly more than the other 2 as he is a Battle Company Captain and the other two are Captains of reserve companies. That being said all 3 of them were serving Captains before Fabian got his promotion and succeeded Ardias so maybe they might be considered before Fabian due to their longer service records.

Good point, Fabian did lead the 3rd and 7th at Macragge though, so he's probably got a lead there. Also, I'm sure I read that he was a 1st company sergeant until Ardias died, meaning he would have served under Invictus at least once.

I did not know that he was a 1st company sergeant until Ardias died, I haven't read that bit before. I just assumed he was part of the 3rd company under Ardias, maybe a sgt or even part of the company command squad during their run in with the Tau during the Damocles Gulf campaign/fighting Chaos in the Fire Warrior game. I do like the fact that Fabian is getting more of a mention in the official canon and books. I do agree that Fabian's heroics during the fights at Macragge probably gives him a slight edge over the 3 captains I mentioned.

That's some serious Ultrasmurf hate going on. Not sure why so many hate the Ultras.

Ultramarines are GW's poster children for Space Marines, but other than that everything I've read suggests they're more genetically pure, less conflicted, less grimdark and less nasty than most Chapters. Ultramarine rule over Ultramar seems more enlightened, fair and effective and less corrupt than most Imperial leadership. Ultramar is certainly one of the more prosperous domains, and voluntarily exceeds it's tithes in some areas.

There are chapters that beat the Ultras in any one of these areas, but the Ultras seem to have it all. Maybe that's the problem. Maybe people resent having any Chapter (that's not their personal favorite) presented as some kind of exemplar.

Or maybe it's that their name is a horrid pun? Ultramarine is a particular blue color, but it also implies that they're more 'Marine' than any other. Yeah, I could see that being irritating.

Could it be that they go in for classical Roman-style names and imagery?

Maybe people hate Guillman because he missed out on the Siege of Terra? Or because he penned the Codex Astartes?

I dunno, if I was a Marine player I'd think they have a lot to be proud of.

Maybe it's because a lot of inexperienced, unskilled players play Ultras because they're the first-among-equals chapter young players encounter in the rulebooks. If so, we should a) give the noobs a chance to grow, and b) don't blame it on the Ultras. Whatever Chapter is featured in the rulebooks is going to attract a lot of new players.

Anyway, I can't figure it out. 'Sides, I play Orks. Don't much care what color armor dey wearz (though Mork, dem wolf pelts look gud!). Whoever fights best is goin' right on top uv me pointy stikk. Dat's an honor, dat iz!

the hate for the Ultramarines stems from the fact that they are the exemplars, they wrote the book on being Marines. and pop culture does not VALUE those types of people. it typically values the edgy rule breaking people! who look at the rules and are like "feth that I know more then the accumulated wisdom of thousands of years of these people!"

BrianDavion wrote:
the hate for the Ultramarines stems from the fact that they are the exemplars, they wrote the book on being Marines. and pop culture does not VALUE those types of people. it typically values the edgy rule breaking people! who look at the rules and are like "feth that I know more then the accumulated wisdom of thousands of years of these people!"

Nah they have always been too good for this universe asking me,and remember the Nids just visited Macragge which render your everything is great there-argument pretty much moot. Plus I'm a fanboi of the Imperial Fists and Space Wolves so don't expect me to cut any slack.

 Beaviz81 wrote:

BrianDavion wrote:
the hate for the Ultramarines stems from the fact that they are the exemplars, they wrote the book on being Marines. and pop culture does not VALUE those types of people. it typically values the edgy rule breaking people! who look at the rules and are like "feth that I know more then the accumulated wisdom of thousands of years of these people!"

Nah they have always been too good for this universe asking me,and remember the Nids just visited Macragge which render your everything is great there-argument pretty much moot. Plus I'm a fanboi of the Imperial Fists and Space Wolves so don't expect me to cut any slack.

who argued everything was great on Macragge? certinly not me. you're proably right that they're still contending with the after effects of the Tyranids invasion. and hoenstly, I suspect, Space Wovles tend to attract the very type of people who hate ultramarines the most.

BrianDavion wrote:

 Beaviz81 wrote:

BrianDavion wrote:
the hate for the Ultramarines stems from the fact that they are the exemplars, they wrote the book on being Marines. and pop culture does not VALUE those types of people. it typically values the edgy rule breaking people! who look at the rules and are like "feth that I know more then the accumulated wisdom of thousands of years of these people!"

Nah they have always been too good for this universe asking me,and remember the Nids just visited Macragge which render your everything is great there-argument pretty much moot. Plus I'm a fanboi of the Imperial Fists and Space Wolves so don't expect me to cut any slack.

who argued everything was great on Macragge? certinly not me. you're proably right that they're still contending with the after effects of the Tyranids invasion.

Finally an Ultramarina-fanboi with some common sense. Sorry I just resent how they tend to outshine certain chapters, but I'm no hater.

Personally I think Macragge would need to be wiped clean because of the Nids.

He would be honoured, monuments built and his relics placed in a place of honour among the others.

A new chapter master would be named after a period and chosen by concil and the grimdark carries on.
Maybe get a battlebarge named after him.

 Beaviz81 wrote:

BrianDavion wrote:

 Beaviz81 wrote:

BrianDavion wrote:
the hate for the Ultramarines stems from the fact that they are the exemplars, they wrote the book on being Marines. and pop culture does not VALUE those types of people. it typically values the edgy rule breaking people! who look at the rules and are like "feth that I know more then the accumulated wisdom of thousands of years of these people!"

Nah they have always been too good for this universe asking me,and remember the Nids just visited Macragge which render your everything is great there-argument pretty much moot. Plus I'm a fanboi of the Imperial Fists and Space Wolves so don't expect me to cut any slack.

who argued everything was great on Macragge? certinly not me. you're proably right that they're still contending with the after effects of the Tyranids invasion.

Finally an Ultramarina-fanboi with some common sense. Sorry I just resent how they tend to outshine certain chapters, but I'm no hater.

Personally I think Macragge would need to be wiped clean because of the Nids.

it depends how far along the invasion was. but yeah there's a certin disconnect between it and how GW has depicted 'nid invasions elsewhere where it's all like "EVEN IF THE NIDS ARE DEFEATED THE WORLD IS NEVER THE SAME AHHH!" I suppose it's possiable the 'nids just didn't really get dug in eneugh to truely begin "nid forming" the world

I think Sicarius would be made Chapter master and Agemman will succumb to warp corruption. Or maybe once he becomes chapter master, Sicarius would be the one revealed to have already been under the influence of chaos.

 LumenPraebeo wrote:
I think Sicarius would be made Chapter master and Agemman will succumb to warp corruption. Or maybe once he becomes chapter master, Sicarius would be the one revealed to have already been under the influence of chaos.

your reasoning for this is?

Warboss Gorhack wrote:
That's some serious Ultrasmurf hate going on. Not sure why so many hate the Ultras.

Ultramarines are GW's poster children for Space Marines, but other than that everything I've read suggests they're more genetically pure, less conflicted, less grimdark and less nasty than most Chapters. Ultramarine rule over Ultramar seems more enlightened, fair and effective and less corrupt than most Imperial leadership. Ultramar is certainly one of the more prosperous domains, and voluntarily exceeds it's tithes in some areas.

There are chapters that beat the Ultras in any one of these areas, but the Ultras seem to have it all. Maybe that's the problem. Maybe people resent having any Chapter (that's not their personal favorite) presented as some kind of exemplar.

Or maybe it's that their name is a horrid pun? Ultramarine is a particular blue color, but it also implies that they're more 'Marine' than any other. Yeah, I could see that being irritating.

Could it be that they go in for classical Roman-style names and imagery?

Maybe people hate Guillman because he missed out on the Siege of Terra? Or because he penned the Codex Astartes?

I dunno, if I was a Marine player I'd think they have a lot to be proud of.

Maybe it's because a lot of inexperienced, unskilled players play Ultras because they're the first-among-equals chapter young players encounter in the rulebooks. If so, we should a) give the noobs a chance to grow, and b) don't blame it on the Ultras. Whatever Chapter is featured in the rulebooks is going to attract a lot of new players.

Anyway, I can't figure it out. 'Sides, I play Orks. Don't much care what color armor dey wearz (though Mork, dem wolf pelts look gud!). Whoever fights best is goin' right on top uv me pointy stikk. Dat's an honor, dat iz!

The primary reasons that I don't like the Smurfs are:

1.) They're too vanilla. Every chapter is like them to the point that they're basically just an ordinary Chapter with a lot of plot armor
2.) They get too much airtime. I'd prefer if the other Chapters could receive some of it so that they were more fluffed out and could receive more recruits
3.) They always come across as douchebags to me
4.) I hate how they're Primarch tried to force his own philosophies onto the other Chapters instead of the teachings of the Chapters' Primogenitors
5.) I hate how they try to force their own ideologies onto other Chapters
6.) they're total hypocrites - they command enough Ultramarian Guard to render them at the fighting strength of a Heresy-era Legion and have the fleet to match. Personally, I think that the only reason Guilliman broke up the other Legions was so that he could make his the most powerful - again, the second part is just my personal opinion

 dusara217 wrote:

Warboss Gorhack wrote:
That's some serious Ultrasmurf hate going on. Not sure why so many hate the Ultras.

Ultramarines are GW's poster children for Space Marines, but other than that everything I've read suggests they're more genetically pure, less conflicted, less grimdark and less nasty than most Chapters. Ultramarine rule over Ultramar seems more enlightened, fair and effective and less corrupt than most Imperial leadership. Ultramar is certainly one of the more prosperous domains, and voluntarily exceeds it's tithes in some areas.

There are chapters that beat the Ultras in any one of these areas, but the Ultras seem to have it all. Maybe that's the problem. Maybe people resent having any Chapter (that's not their personal favorite) presented as some kind of exemplar.

Or maybe it's that their name is a horrid pun? Ultramarine is a particular blue color, but it also implies that they're more 'Marine' than any other. Yeah, I could see that being irritating.

Could it be that they go in for classical Roman-style names and imagery?

Maybe people hate Guillman because he missed out on the Siege of Terra? Or because he penned the Codex Astartes?

I dunno, if I was a Marine player I'd think they have a lot to be proud of.

Maybe it's because a lot of inexperienced, unskilled players play Ultras because they're the first-among-equals chapter young players encounter in the rulebooks. If so, we should a) give the noobs a chance to grow, and b) don't blame it on the Ultras. Whatever Chapter is featured in the rulebooks is going to attract a lot of new players.

Anyway, I can't figure it out. 'Sides, I play Orks. Don't much care what color armor dey wearz (though Mork, dem wolf pelts look gud!). Whoever fights best is goin' right on top uv me pointy stikk. Dat's an honor, dat iz!

The primary reasons that I don't like the Smurfs are:

1.) They're too vanilla. Every chapter is like them to the point that they're basically just an ordinary Chapter with a lot of plot armor
2.) They get too much airtime. I'd prefer if the other Chapters could receive some of it so that they were more fluffed out and could receive more recruits
3.) They always come across as douchebags to me
4.) I hate how they're Primarch tried to force his own philosophies onto the other Chapters instead of the teachings of the Chapters' Primogenitors
5.) I hate how they try to force their own ideologies onto other Chapters
6.) they're total hypocrites - they command enough Ultramarian Guard to render them at the fighting strength of a Heresy-era Legion and have the fleet to match. Personally, I think that the only reason Guilliman broke up the other Legions was so that he could make his the most powerful - again, the second part is just my personal opinion

1) Blood Angels and Space Wolves arguably have more Plot Armour then the Ultramarines. The Space Wolves especially. As for being 'normal', the Ultramarines set the standard. Everyone else measures up to them and falls short.

2) Blood Angels, Space Wolves, Grey Knights, Dark Angels all have as much air time as the Ultramarines, if not more. The Ultramarines share what was originally their codex with the other Codex Adherent former legions.


3) And Dark Angels, Grey Knights, or Space Wolves do not? Heck, 90% of the Imperium is filled with douchebags.

4) Guilliman didn't have time to force anything on the split chapters. Unless you mean when they originally split the legions, in which case, the other Primarchs either agreed, or were Russ, Vulkan or Dorn, the former two not having many chapters descended from them anyways.

5) The Ultramarines don't go out of their way to do anything of the like. The Imperium might demand that Chapters adhere to the Codex, but I don't see Marneus Calgar going out of his way to tell people to adhere to the Codex.

6) Really, the PDF are the part you complain about in that regard? Baal and such has a PDF as well, I imagine. The bigger thing to complain about would be the fact that 66% Of all chapters are descended from the Ultramarines, giving Guilliman the largest pool of marines to draw from when he gets out of stasis. On the other hand, he reduced the direct strength of his own Chapter, since he stuck to his own rules when he was still around. He had the largest of all the legions, and as such, the most to lose. The 500 worlds of Ultramar were split, he could have easily kept his little Empire within the Empire if he wanted to keep the most power.

In fact, the Legions splitting hurt him more than any of the other primarchs. The rest had their legions nearly obliterated, which is why the Ultramarines were pivotal in securing the Imperium during the Scouring.

If Calgar were killed, the Ultramarines would do everything they could to reclaim his gauntlets - those are relics of the Primarch and they would risk everything to get those back, even if they couldn't get Calgar himself back.

Tigurius is not a commander, doesn't have the skills to lead the chapter. That's like saying that when a king dies the bishop takes over, two different career paths. Librarians are only similar to captains in terms of leading on the tabletop.


I love how Ultramarine geneseed is now in 75% of all marines and that all the successor chapters owe some sort of fealty to the Ultramarines and recognise the UM CM (Calgar for now) as their superior.
That means that Calgar could call on 3/4 of all Imperial Space Marines - you say they have the strength of a legion...
...before the heresy they were the biggest legion at 250,000.
Calgar could potentially raise a force of 750,000 marines according to the current fluff, that's the equivalent of several legions - they really don't think this stuff out much do they?

Successor chapters don't owe any fealty to their founding chapter, except in the case of the Dark Angels who really only pretended to split their legion.

 Orblivion wrote:
Successor chapters don't owe any fealty to their founding chapter, except in the case of the Dark Angels who really only pretended to split their legion.

Not entirely true, if the Ultramarines were to, say, start a rebellion, then at least 60% of their successors would join them. Ultramarines have direct power over several Chapters who basically follow them around like lapdogs.

I just looked at it.
It's not 3/4, it;s over 2/3rds are Ultramarine geneseed, so a measly 670,000 or so.
Under successor chapters it states that they do owe fealty to the master of the Ultramarines - p30.


Automatically Appended Next Post:

 dusara217 wrote:

 Orblivion wrote:
Successor chapters don't owe any fealty to their founding chapter, except in the case of the Dark Angels who really only pretended to split their legion.

Not entirely true, if the Ultramarines were to, say, start a rebellion, then at least 60% of their successors would join them. Ultramarines have direct power over several Chapters who basically follow them around like lapdogs.

Exactly, the current codex makes it the most significant military force in the Imperium. Then you have the non-astartes military of Ultramar and I wouldn't be surprised if other successor chapters ran similar setups to Ultramar but on a smaller scale.

Computron wrote:
I just looked at it.
It's not 3/4, it;s over 2/3rds are Ultramarine geneseed, so a measly 670,000 or so.
Under successor chapters it states that they do owe fealty to the master of the Ultramarines - p30.

I took that line to mean they owe fealty to Guilliman, not the Ultramarines chapter itself.

Over the comms the ultramarines hear "5 minutes to extraction", then the master of the fleet orders "Load the Vortex Missile".

The honour guard retrieves the pieces of their fallen leader. Several aircraft fly overhead decimating the orks. Thraka teleports away. A storm raven lands and the honour guard embark. As the last of the extracted forces leaves the atmosphere a scan is done of the planet to ensure thraka remains upon it. With the scan complete, and the presence of thraka confirmed, the missile is fired. The planet goes boom.

Two champions of their faction felled in a single day. The loss goes effectivly unnoticed by the galaxy at large. New champions quickly rise to take their place. War goes on.

 Orblivion wrote:

Computron wrote:
I just looked at it.
It's not 3/4, it;s over 2/3rds are Ultramarine geneseed, so a measly 670,000 or so.
Under successor chapters it states that they do owe fealty to the master of the Ultramarines - p30.

I took that line to mean they owe fealty to Guilliman, not the Ultramarines chapter itself.

Guilliman is the father of the Ultramarines, Calgar is the only master.
p105 under Calgar - it gives one of his titles as Master of the Ultramarines.

So most, if not all the successor chapters owe fealty to Calgar.

Computron wrote:

 Orblivion wrote:

Computron wrote:
I just looked at it.
It's not 3/4, it;s over 2/3rds are Ultramarine geneseed, so a measly 670,000 or so.
Under successor chapters it states that they do owe fealty to the master of the Ultramarines - p30.

I took that line to mean they owe fealty to Guilliman, not the Ultramarines chapter itself.

Guilliman is the father of the Ultramarines, Calgar is the only master.
p105 under Calgar - it gives one of his titles as Master of the Ultramarines.

So most, if not all the successor chapters owe fealty to Calgar.

Still open to interpretation if you ask me. Either way its flat out stupid, so if you are right I will just ignore that bit anyways.

 Orblivion wrote:

Computron wrote:

 Orblivion wrote:

Computron wrote:
I just looked at it.
It's not 3/4, it;s over 2/3rds are Ultramarine geneseed, so a measly 670,000 or so.
Under successor chapters it states that they do owe fealty to the master of the Ultramarines - p30.

I took that line to mean they owe fealty to Guilliman, not the Ultramarines chapter itself.

Guilliman is the father of the Ultramarines, Calgar is the only master.
p105 under Calgar - it gives one of his titles as Master of the Ultramarines.

So most, if not all the successor chapters owe fealty to Calgar.

Still open to interpretation if you ask me. Either way its flat out stupid, so if you are right I will just ignore that bit anyways.

Right, because there's SOOOO much fluff contradicting it. (*hint* *hint* sarcasm *hint* *hint *)

Computron wrote:

 Orblivion wrote:

Computron wrote:
I just looked at it.
It's not 3/4, it;s over 2/3rds are Ultramarine geneseed, so a measly 670,000 or so.
Under successor chapters it states that they do owe fealty to the master of the Ultramarines - p30.

I took that line to mean they owe fealty to Guilliman, not the Ultramarines chapter itself.

Guilliman is the father of the Ultramarines, Calgar is the only master.
p105 under Calgar - it gives one of his titles as Master of the Ultramarines.

So most, if not all the successor chapters owe fealty to Calgar.

yes his title is Master of the Ultramarines, CHAPTER. that does NOT mean the ultramarines sucessors owe the Ultramarines CHAPTER any fealty. Calgar is not the Master of the Ultramarines legion. he is not the "high lord of the sons of Gulliman" he is the chapter master of the ultramarines. and by and large to the ultramarine sucessors that doesn't mean a whole lot beyond some respect. (respect can be lost) notice the lack of a "feast of blades" for the Ultramarines? thats because Gulliman was very clear on the independance of the newly formed chapters.

Sucessor chapters owe nothing to their parent, but as shown time and time again, if the the parent calls for aid, the sucessors jump to it. Look at Baal, when the Blood Angels were on the brink of destruction, their sucessors gave up their own recruits and geneseed to keep the chapter alive and kicking. Recruits and geneseed are a chapter's most valuable resource, so it says a lot. Look at the Genesis Chapter, whose fluff says they serve the lord of macragge if he needs aid.
That said, open rebellion would be another thing entirely. It would certainly be interesting to see what happens if the likes of the Ultramarine called for its sucessors to stage an open civil war.

 Deadshot wrote:
Sucessor chapters owe nothing to their parent, but as shown time and time again, if the the parent calls for aid, the sucessors jump to it. Look at Baal, when the Blood Angels were on the brink of destruction, their sucessors gave up their own recruits and geneseed to keep the chapter alive and kicking. Recruits and geneseed are a chapter's most valuable resource, so it says a lot. Look at the Genesis Chapter, whose fluff says they serve the lord of macragge if he needs aid.
That said, open rebellion would be another thing entirely. It would certainly be interesting to see what happens if the likes of the Ultramarine called for its sucessors to stage an open civil war.

The Genesis Chapter happens to be a Secound Founding chapter so I imagine the more distant the founding the less likely they are to answer a call for aid (or to owe fealty to Lord Macragge - that's the actual title lol).

I'm guessing most sucessor chapters wouldn't follow the Ultramarines in open rebellion since they still owe loyalty first and foremost to the Emperor of Mankind, not to Lord Macragge. But yea, if they were threatened by some outside force, most would answer the call for aid.

 dusara217 wrote:

 Orblivion wrote:

Computron wrote:

 Orblivion wrote:

Computron wrote:
I just looked at it.
It's not 3/4, it;s over 2/3rds are Ultramarine geneseed, so a measly 670,000 or so.
Under successor chapters it states that they do owe fealty to the master of the Ultramarines - p30.

I took that line to mean they owe fealty to Guilliman, not the Ultramarines chapter itself.

Guilliman is the father of the Ultramarines, Calgar is the only master.
p105 under Calgar - it gives one of his titles as Master of the Ultramarines.

So most, if not all the successor chapters owe fealty to Calgar.

Still open to interpretation if you ask me. Either way its flat out stupid, so if you are right I will just ignore that bit anyways.

Right, because there's SOOOO much fluff contradicting it. (*hint* *hint* sarcasm *hint* *hint *)

There isn't a lot of fluff contradicting it, but there is a very key piece of fluff contradicting it. The splitting of the legions and the enforcement of the Codex Astartes on the subsequent chapters. This was all done, by the Ultramarines primarch no less, to avoid that exact situation.

 Orblivion wrote:


Still open to interpretation if you ask me. Either way its flat out stupid, so if you are right I will just ignore that bit anyways.

It's not open to interpretation, that's how they've unthinkingly written it.

There isn't a lot of fluff contradicting it, but there is a very key piece of fluff contradicting it. The splitting of the legions and the enforcement of the Codex Astartes on the subsequent chapters. This was all done, by the Ultramarines primarch no less, to avoid that exact situation.

Except the Dark Angels and the Black Templars are two examples that ignore this and the Blood Angels would be the same given that they all have the same problem with the black rage, red thirst thing. Also, the Primarch hasn't been around for 10,000 years.

I do agree with you though, "successors" are not junior branches of the Ultramarines chapter owing fealty to Calgar. I imagine as Chapter Master of the successor chapter called the Ultramarines (because they are a successor as well) he has some kind of ceremonial role as his chapter was able to have the name and much of the trappings of the legion. In reality though, Calgar is no better than the Chapter Master of any other Ultramarine successor.

The way it's written in the current codex though...Calgar could call on over 2/3rds of the space marines in the galaxy to come to his aid...and they'd come.

Computron wrote:
It's not open to interpretation, that's how they've unthinkingly written it.

Almost everything in 40k is open to interpretation. For instance, the line in the codex you refer to says "master of the Ultramarines", not "Master of the Ultramarines". They are not using it as a proper noun, so I would argue that they are not referring to anyone who holds the title of "Master", and are instead referring to the master, which would be Guilliman.

Except the Dark Angels and the Black Templars are two examples that ignore this and the Blood Angels would be the same given that they all have the same problem with the black rage, red thirst thing. Also, the Primarch hasn't been around for 10,000 years.

I do agree with you though, "successors" are not junior branches of the Ultramarines chapter owing fealty to Calgar. I imagine as Chapter Master of the successor chapter called the Ultramarines (because they are a successor as well) he has some kind of ceremonial role as his chapter was able to have the name and much of the trappings of the legion. In reality though, Calgar is no better than the Chapter Master of any other Ultramarine successor.

The way it's written in the current codex though...Calgar could call on over 2/3rds of the space marines in the galaxy to come to his aid...and they'd come.

Yes the Dark Angels lied and the Black Templars just ignored it. This is different though, this is the chapter of the primarch who actually enforced it going completely against his own rule, and in far greater numbers than the Dark Angels and Black Templars combined.

Personally, how I see it:

Thraka (somehow) kills Calgar (could I please know how, since you did mention certain modifications?)

Thraka tries to press advantage, but enraged Ultras convene around their Lord's body, defending it and retreating with it/murdering the orks.

If Ghazghkull flees/survives, the Ultramarines send more men to hunt him down. Successor Chapters also join the hunt. Thraka is dead by the turn of the century.

Calgar is entombed, relics removed and venerated. Cassius, Tigurius, Helix and the Master of the Forge are in a quandry, as tradition states that Agemman should be the new Chapter Master, yet Sicarius is proving to be a star ascendant. However, unless Calgar declared Sicarius as his successor, Agemman gets the role. Sicarius is promoted to 1st Company Captain and some guy named Titus is promoted to 2nd Company Captain.

The Ultras wouldn't be taken prisoner, they simply wouldn't allow it (cue falling on their swords/fighting to the last man). Nor would they let Ghazghkull leave the planet with Calgar's body.