Exarchate of Ravenna

The Exarchate of Ravenna (Latin: Exarchatus Ravennatis; Greek: Ἐξαρχᾶτον τῆς Ῥαβέννης, romanized: Exarcháton tís Ravénis), also known as the Exarchate of Italy, was an exarchate (administrative district) of the Eastern Roman Empire comprising, between the 6th and 8th centuries, the territories under the jurisdiction of the exarch of Italy (exarchus Italiae) resident in Ravenna. The term is used in historiography in a double sense: "exarchate" in the strict sense denotes the territory under the direct jurisdiction of the exarch, i.e. the area of the capital Ravenna, but the term is mainly used to designate all the Byzantine territories in continental and peninsular Italy. According to the legal sources of the time, these territories constituted the so-called Provincia Italiae, on the basis of the fact that they too, until at least the end of the 7th century, fell under the jurisdiction of the exarch and were governed by duces or magistri militum under him.

The exarchate was established around 584, the year in which the presence of an exarch in Ravenna is attested for the first time, as a consequence of the perpetual state of war with the Lombards (who in the meantime had stolen approximately two thirds of the Byzantine lands in continental and peninsular Italy), which necessarily entailed the militarization of Byzantine Italy. The necessities of war pushed military commanders to centralize powers, thus depriving the civil authorities which are no longer attested by sources starting from the second half of the 7th century. Thus the separation of civil and military powers introduced by Diocletian and Constantine disappeared. Byzantine Italy was divided into various military districts governed by duces or magistri militum dependent on the exarch of Italy, the military governor with full powers chosen by the emperor from among his generals or trusted officials to govern and defend the remaining territories italics. These districts gradually evolved into increasingly autonomous duchies.