Frumentarii

Frumentarii acted as the secret service of the Roman Empire. There are two main sources of information about the frumentarii, inscriptions on gravestones and anecdotes where the actions of individual frumentarii are mentioned by historians. From what is known of the Frumentarii, they always worked in uniform. The Empire was based on patronage, not
Found on http://en.wikipedia.org/wiki/Frumentarii
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