Sack of Thessalonica (1185)

Sack of Thessalonica
Part of the third Norman invasion of the Balkans
Date9–24 August 1185
Location
Thessalonica (now Thessaloniki, Macedonia, Greece)
Result
  • Sicilian victory
  • Thessalonica sacked
Belligerents
Byzantine Empire, Alan and Georgian mercenaries Kingdom of Sicily
Commanders and leaders
David Komnenos 
John Maurozomes 
Theodore Choumnos
Count Baldwin
Count Richard of Acerra
Count Tancred of Lecce
Strength
Unknown 80,000 men
200 ships
Casualties and losses
7,000 soldiers and civilians 3,000 soldiers

The sack of Thessalonica in 1185 by Normans of the Kingdom of Sicily was one of the worst disasters to befall the Byzantine Empire in the 12th century.