From Halopedia, the Halo wiki
A princeps was a Forerunner officer serving the ecumene's navy. On warships, the princeps served as the ship's captain and prime coordinator, leading the ship's crew of navarchs. The princeps and navarchs were protected by heavily armored Warrior-Servant scutarii.
- ^ Halo Encyclopedia (2022 edition), page 381
- ^ Halo: Warfleet, page 80