Each Branch has its own unique set of ranks. Below is a list of links to the corrosponding ranks:

Royal Manticoran Navy
Grayson Space Navy
Imperial Andermani Navy
Republic of Haven Navy
Manticoran Diplomatic Corp
Manticoran special Intelligence Services
Royal Manticoran Astro Control Services
Manticoran Merchant Marines
Royal Manticoran Army
Royal Manticoran Marine Corp
Sprinx Forestry Service