I'm not sure if it's too "noblebright" for 40k, or if it's too special snowflake. I need help making them more fallible, and most of all I need a chapter logo. Here it goes:
Angels of Murder (13th Founding, fleet-based)
Don't know founding chapter, think it's Fists because of their tendency to get wiped out, or Raven because of their pragmatism (they're really Ultramarines)
Were nearly wiped out in a battle against the Nids, reduced to 150 full Battle-Brothers and 1st, 2nd, 3rd companies wiped out
Geneseed flaw slowed hypno- conditioning, so couldn't replenish losses quickly
Almost all relics lost, with exception of one Contemptor Dread, Ancient Arak, and all the power armor they had left was mainly MkV and MkVI
Their former 7th Company commander became Chapter Master, made several changes to chapter structure to compensate
He installed a Chapter Counsel to help him lead, as he was relatively inexperienced for the job
They would focus on bolter drills and stealth to make use of what equipment they had left, become self-sufficient in learning how to repair their wargear and fleet, and become friendly to Imperial Guard to augment their firepower
Under his leadership, the Angels became known for their marksmanship and skill at ambush, in addition to a more relaxed approach to out-of-battle discipline