The rank of Master of the Guard is the position most Thor berserkers want. Not only is it prestigious, but the rank holder gets to stay close to home.
The Master of the Guard also has the ear of Shkah himself, in some matters... Something that can be very profitable to anyone who knows how to use his position.
The Reanimated Master Of The Guard spawns with Overseer Rakzum shortly after the Master Of The Guard is killed, and is very tough.