Kill Team Epsilon, they have sustained heavy casualties. Heavy enough that for a certain duration no new veteran Space Marines may be created until a few years pass in game.
The two veterans still left alive from the beginning of the campaign (1.5 year in real life) are around Rank 4, but after this will be rank 5. One veteran just died as his insanity took over and he flew off to fight a Trygon single handed, a heroic sacrafice ensures the fight is easier for the group later. I houserule that because of their dire need of veterans that this Assault Marine would be entombed in a dreadnought, and they have just reocvered his body.
One character is a "veteran" in the sense his character was transfered to Kill Team Epsilon and has survived thus far, but has not actually been in the game and onyl joined within the last two months. So he doesn't know much of the sotry. He will soon be Rank 5 Apothecary.
One player from near the begninning just had his Assault Marine entombed and is now going to be playing a Psyker from the Blood Raven's (Rank 1). He has survived this initial session, but his player might play something else he isn't sure, which is good timing since a pause in the aciton is coming where they could get a higher rank person.
Another player is an actual newbie to TT games in general, but is also playing a Psyker and loving it. He is an Imperial Fist Psyker Rank 1.
Kill Team Epsilon
Rank 4 Dark Angel Techmarine (Soon Forgemaster)
Rank 4 Ulramarines Tactical Marine
Rank 4 Dark Angel Apothecary
Rank 4 Blood Angel Assault Marine (Soon Dreadnought)
Rank 4 Salamanders Devastator (Doesn't play much)
Rank 1 Blood Raven Psyker (Wants to play another Assault Marine, this time a Flesh Tearer *sigh*)
Rank 1 Imperial Fist Psyker