Praefectus castrorum

{{Short description|Roman army position responsible for logistics and training}}

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The praefectus castrorum ("camp prefect") was, in the Roman army of the early Empire, the third most senior staff officer of the Roman legion after the legate (legatus) and the senior military tribune (tribunus laticlavius), both of whom were from the senatorial class.{{cite book|author1=Sir William Smith|author2=William Wayte|author3=George Eden Marindin|title=A Dictionary of Greek and Roman Antiquities|url=https://books.google.com/books?id=Cu89AAAAYAAJ&pg=PA798|year=1901|publisher=J. Murray|pages=798–}} The praefectus castrorum was a quartermaster responsible for military logistics and requisition (training, equipment procurement and maintenance, and construction of the camp, etc.) but could command the legion whenever the senior commanders were absent. The post was usually held by a soldier promoted from the centurionate, having already served as a chief centurion (primus pilus) of a legion, and was therefore open to ordinary, plebeian citizens. Prefects of this rank, for example Sextus Vibius Gallus,SEG 57 1293 were awarded prizes (dona) to mark their achievements.{{cite book|author=Valerie A. Maxfield|author-link=Valerie Maxfield|title=The Military Decorations of the Roman Army|url=https://books.google.com/books?id=Nuex2PW7QR0C&pg=PA204|date=1 January 1981|publisher=University of California Press|isbn=978-0-520-04499-9|pages=204–}}