Chain of command
The Companionship has a very different chain of command, or rank system, compared to the average military, which goes as follows, from top to bottom, highest rank to lowest rank:
Master - Leader of the Companions. This is Master Capris.
Keeper - The highest possible rank a Companion can get. Only 1 at a time.
Major - In charge of their own companies and Companion operations.
Protector - High ranking Companions. At this rank, they get their own suit of power armor.
Seeker - Most of the Companionship's ground forces. Usually in charge of flying AB-1s.
Initiate - New member.