History quiz

What are the evocati?

Evocati in ancient Rome were soldiers drawn from allies (socii) and provincials who had served in auxiliary units and shown promise as leaders—i.e., centurions or decurions. It is not clear when this practice began, but under Augustus, the evocati were constituted into separate units which were then attached to the Imperial Guard to form what was called the cohors amicorum ("cohort of friends") or the cohors praetoria ("praetorian cohort"). Their numbers fluctuated, but by the end of the 2nd century AD there was a single cohors amicorum comprising about 500 infantry and 120 cavalry.

A body of evocati also existed in the fleet as the classis praetoria Misenensis, based on the navy station of Misenum, at the Bay of Naples. There were five cohorts of evocati at Misenum, each containing 1,000 marines, and another was in the fleet at Ravenna; thus the total number of evocati in the Navy was about 6,000 men.