"tribal federates" . . "foederatus" . "allied tribes" . . . "foedus" . "Foederati" . . "Roman ally" . . "barbarian warbands" . "federated troops" . "Foederati" . . . . . . "''F\u0153derati''" . . . . . . "Foederatus" . "Byzantine-confederate" . "imperial service" . "F\u0153dus" . . "becoming in effect a separate state within the borders of the Roman Empire" . "f\u0153derati" . "foreign mercenaries" . "federate" . "socii" . "foederati troops" . "foederati" . . "foederatorum" . . "federates" . . . "Empire's Arab allies" .