sonicfish

*smiles* Touché

The Legions were not already organised for the primarchs. Sorian's Inductus Excelsus document the necessity of a far greater number of troops. each legion was created using the geneseed of each primarch, a new generation of SM were created, ones that could be combat ready in a single year. The process was accelerated with concequences. As each Primarch was found, his legion was created.

"Although the blood seeping from my ears in frustration is making it hard to think i have a nagging suspicionb that there were legions, comprised of chapters comprised of companies as a chapter is an old legion formation." Naw, at the end of the great crusade when all the primarchs had been found the legions were formed, one for each primarch. Chapters were created at the second founding with the writing of the Codex Astartes.

"Tyranids will have planets (you can think of them as hive fleet staging posts if you like)" Sorry no nids during the great crusade. Nor do they have any planetary staging posts . During the crusade there were no chapters. Naturally you're totally free to do what you wish with your mod. But would be nice to follow the fluff if you're basing it on it. Sav

Making an entire race for SM isn't really feasible. The imperium does not deploy fleets of Adeptus Astartes ships in fleet engagements, such is the job of the battle fleets. A battle fleet consists of in the region of 75-100 ships, a SM chapter only has a handful of strike cruisers and very few battle barges. The Adeptus Astartes is not the space fairing power of the imperium, more the elite. For that matter neither is the Imperial guard, as such you wouldn't include the IG in a Gal Civ mod at a