Raids of Commorragh by Space Marines
How many times have they raided and succeeded in saving fellow Space Marines?
Also do we have any novels where we get to see it? I vaguely recall the Uriel Ventris/Honsou novels have a kind of similar premise where Ventris saves a load of Renegades on Medrengard, so like this but Commorragh.
Also, what do you think would be the "ideal size" of Marine Force would be best to perform that duty? Is a Kill Team enough or do you need a Chapter to save a fellow Marine? Let's say it's to save a single Marine but they get a couple of others like Ventris on Medrengard?
Reason for my question: I want a Space Marine, probably an Officer between Sergeant and Captain, in my Homebrew to have been him be a prisoner of the Dark Eldar before my story begins.
Cheers for any help.