So yeah, guess having any faith in your ability to not be more than a clown is a waste.
Why were they founded: to fight chaos xenos after the horus heresy
When were they founded? What millenium/which founding? Where they founded as a response to a significant incursion? Were they part of another chapter where there was a schism in beliefs?
What segmentum of the Imperium do they generally operate in: anywhere the warp fire determines...
Your attempt at skirting an answer is as blatant as the average politician. So again which segmentum do they largely operate in? Chapters can have elements in any segmentum but will largely operate in one so that individual companies can be reinforced if needed.
Whats the purity of their geneseed: they have one green and one red eye, usually 8 to 9 feet tall depending on gravity of recruitment planet.
That doesnt answer the question. Has their geneseed developed any notable flaws and/or have certain organs stopped working?
Chapters such as the Black Dragons, Salamanders, and Raven Guard (to name only a few) have geneseed whose purity is not absolute. Each of those chapters suffers from one of their organs not functioning properly. Other chapters have lost the use of an organ like the Betchers gland; and then there are chapters who do have highly pure geneseed like the Ultramarines, Black Templars, or Iron Hands.
So once again, whats the purity of their geneseed?
What is the chapter culture like: drunkenness, breeding, vampirism and some remarkable dancing are very central to a divamarines' cultural spectrum.
Are they fleet based or do they have a homeworld: abandoned space hulks and numerous planets are frequented for parties and rituals.
You really think your a barrel of laughs don't you?
Again, do they have a single planet where the entire chapter gathers at times as many chapters do or are they like the Black Templars and tie themselves to no one world?
What is their combat doctrine like: jet packs, dreadnaughts, scouts, las instead of plasma.
Those are things they use, what I'm asking is their specific combat doctrine. The Ultramarines have the codex astartes, the Raven Guard prefer covert operations preceded by lightning strikes, the Marines Malevolent use overwhelming force, and the Flesh Tearers take to close quarters engagements.
How does the chapter operate with other Imperial factions including other chapters: the divamarines don't like other chapters apart from dark angels, ultramarines among a few others, blood angels, legion of the damned and space wolves aren't seen as favourable.
This here sounds like a minimal attempt at something very good. I'd venture the guess that this chapters geneseed has a high purity level, their founding predicated on replacing a chapter or chapters lost as a result of genetic instability. This would leads to them looking down on and only begrudgingly operating with chapters they view as impure.
Are they amongst those that have not or have only begrudgingly accepted primaris into their ranks: no that shits gay.
Any notable members/ships? Any notable actions/campaigns: doug is a captain, once defended earth?!