 Josephus ("De Bello Judaico", VI.238) uses the term to refer to the quartermaster-general of all camps, while Dionysius of Halicarnassus ("Roman Antiquities", X.36.6) used it to refer to the role of a "primus pilus" in a legion that had lost its commander.It also occurs in the Bible (), where it has been interpreted as referring to the praetorian prefect, the commander of the camp and garrison of the Praetorian Guard in Rome, or the subordinate officials "praefectus peregrinorum" and "princeps castrorum".From the 1st century AD, it was used (albeit infrequently) in a broader sense as a literary term to refer to generals, i.e.