Originally Posted by MontytheMighty
in 40k, Space Wolves have no successor chapters (other than the failed Wolf Brothers)
in 30k, they were a legion
they went from a legion to a chapter with no successors...what happened to the rest of the Wolves?
"The Legions were broken down into Chapters, an already extant Astartes military formation in some of the Legions that consisted of 1,000 Battle-Brothers of fighting strength. Never again would one man wield so much power over vast legions of superhuman troops at his command.
However, Leman Russ suffered no interference where his Legion was concerned, and flatly refused to listen to Guilliman. According to the Wolf Lord Bulveye of the Legion's 13th Great Company, Russ once dared strike the Emperor in person when He offered critiscism to Russ. What the volatile Primarch would not accept from his Father, he would certainly not tolerate from his brother. Only when the situation almost devolved into another Imperial civil war did Leman Russ seemingly relent. The canny Primach pulled a sleight of hand on his brother Guilliman, ostensibly agreeing to separate the Space Wolves Legion into thirteen independant Great Companies, each roughly a Chapter in strength. The Great Companies, however, already were semi-autonomous, each with their own armouries, starship support and answering to their Jarl or Wolf Lord only, with all of the Jarls answering only to Russ. In essence, Russ' acquiescence changed nothing in the modus operandi of the Space Wolves Legion save for its official table of organisation"
"The Space Wolves have a unique structure that is notably different from a standard Codex Chapter. Rather than 10 companies of 100 marines, the Space Wolves consist of 12 Great Companies of varying strengths. Each Great Company is based in the Fang, the Space Wolves Fortress-monastery and is led by a Wolf Lord,who answers only to the Great Wolf.[8e]
Each Great Company is a fully self-contained army, with all the troops, vehicles and equipment necessary to make war, as well as the spacecraft necessary to transport itself. They each have their own forges and customs. The size of each Great Company is unknown but the Space Wolves Legion is said to be one of the smaller Legions, due to the Curse of the Wulfen genetic instability within the Chapter gene-seed.[6a] As each Great Company serves as an independent army, they maintain a much greater number of troops as opposed to codex companies.[8e]"
I take from this that every great company was roughly 1000 marines in strenght in the beginning. ofcourse I cannot be sure if the wiki is correct or not since I am always hessistant about Wiki sources but this seems to coincide with my own vague memories.