Key Facts
- Siege start date
- 5 August 1068
- City captured
- 16 April 1071
- Duration
- Approximately 2 years, 8 months
- Byzantine presence ended
- Over 500 years of rule in southern Italy
- Norman commander
- Robert Guiscard
Strategic Narrative Overview
Robert Guiscard invested Bari beginning 5 August 1068, blockading the city by land and, crucially, by sea to cut off Byzantine resupply and reinforcement from Constantinople. The Byzantines mounted resistance and attempted to relieve the garrison, but Norman naval forces maintained the cordon. The siege stretched nearly three years, exhausting the defenders and preventing any effective Byzantine counteroffensive to break the encirclement.
01 / The Origins
By the mid-11th century, Norman adventurers had carved out territories across southern Italy at the expense of the Byzantine Empire, which held its last major stronghold at Bari, capital of the Catepanate of Italy. Robert Guiscard, the preeminent Norman leader, sought to expel Byzantine power entirely from the peninsula, making Bari the final and most strategically vital target of his Italian campaign.
03 / The Outcome
Bari fell on 16 April 1071 when Robert Guiscard entered the city, completing the Norman conquest of Byzantine Italy. The capture ended not only Byzantine imperial presence in southern Italy, a tenure of more than five centuries, but also extinguished the last continuity of Roman political control dating to the 3rd century BCE. Southern Italy subsequently became consolidated under Norman rule.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Robert Guiscard.
Side B
1 belligerent
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.