Well, I missed a day in there (busy, busy, busy), but here is the afore-mentioned write up of the veteran Sergeants in my fluffy Warhammer 40,000 army.
SERGEANT CHAMPAGNE - The senior sergeant of the detachment. Champagne is known to carry his large axe with him everywhere, as a sign of his rank and authority. He commands a five man squad attached to a razorback transport.
SERGEANT TAEBERIUS - Horribly wounded after an aerial jump-pack insertion, Taeberius' life was saved only by fitting him with advanced bionics. He now commands II MARS' lead tactical squad, often the first to deploy from their transport into battle.
SERGEANT ARGENBRIGHT - Only recently promoted to veteran status, Argenbright has yet to paint his helmet gold in honor of his station. He has instead spent his time since promotion relentlessly drilling his squad, constantly inspecting their weapons, and consulting with the squad's transport operators.
SERGEANT COSTIGAN - Having served with Lt. Tadena in Brother Corbulo's Honor Guard, Costigan now leads his five man assault squad in repelling attacks made against the II MARS Command rhino. During his time as a member of a veteran assault squad, there were several battles that only Costigan survived, leading other Blood Angels to endow him with the epithet "Lone Wolf", a title he has embraced by carving a wolf onto his breastplate and wearing a Baal desert wolf pelt into battle.