. "Maurice's military campaigns" . . "series of invasions" . "Maurice's Balkan campaigns" . "kept the Avars and Slavs at bay" . "Byzantine Empire" . . . . "series of campaigns" . . . . "13px|alt=|link=Byzantine Empire" . "War" . . . "ongoing war in the Balkans" . . . "campaigned extensively" . "Balkan Campaign" . "Balkan Campaigns" . . "series of successful Byzantine campaigns" . . . . . . . . . "wars" . . "series of counterattacks" . "Maurice's Balkan campaigns" . "South Slavs" . . "military expeditions" . "in the Balkans" . . "Balkan" . "Balkan campaigns" . "Avar Khaganate" . . "campaigning in the Balkans" . . . . "Slavs and Avars" . "series of successful campaigns" . "Balkans" . "campaigns" . . . "Siege of Singidunum (595)" . "SuccessfulRomandefense" . . . . .