My Blood Axe warband is know as Da Longteef, a reference to their success (both in wealth and longevity) as mercenaries. They are lead by the Warlord General Grimtoof.
Da Longteef spend most of the their time in Imperial space, renting their services as mercenaries to anyone who will supply them with arms and equipment. They often travel with Ork Freebooters (pirates) serving as a ground force or boarding force, even working for the famed Freebooter, Kaptin Badrok.
Like others of the Blood Axe clan, they model their military structure off of the Imperial Guard. Grimtoof has five large warbands under him, each lead by one of his Kolonels. Each warband is structured around a different function: infantry, recon, armour and artilery, walkers and air power - elements from each can be combined to create a tailored force to the mission - a most unorky idea.