Chapter Master (Level 1)
The leader of the clan.
Captain (Level 2)
The leader of an entire company, which includes several squads. Requires Chapter Master and High Chaplain approval, and a majority vote from the sergeants. Also requires battle brother requirements + 2 months of service + 20 hours of in-game time.
Specialist Leader (Level 2)
The Master of the Forge, High Chaplain, and Master Apothecary. Requires same requirements as captain, Chapter Master approval, and internal majority vote.
Chaplain (Level 3)
Recruiters and morale boosters. Requires 2 months of service + 10 hours in-game time + Battle Brother requirements + interrogator or High Chaplain approval.
Sergeant (Level 4)
Leader of a squad, named after you. Requires Battle Brother requirements + 1 month of service + 10 hours in-game time +captain referral (of same company.)
Battle Brother (Level 5)
Standard foot-soldier, very versatile and durable. Requires 4 hours of in-game time, promotion test pass, and 2 weeks of service.
Scout (Level 0)
A new member, on probation. Must pass the promotion tests and meet all Battle Brother requirements to be promoted out of.