Mongol Counterweight Trebuchet

Timeline

1. c. 1253Persia · IranDuring Hulegu's western campaign, the Mongol army recruited Muslim engineers from West Asia, incorporating counterweight trebuchet technology into the expeditionary equipment system for reducing fortified strongholds.
2. 1258Baghdad · IraqWhen the Mongol army besieged Baghdad in 1258, it deployed multiple heavy trebuchets that continuously hurled stone projectiles against the city walls—a landmark application of the counterweight trebuchet in the Mongol conquest of West Asia.
3. 1259–1260West Asia · West AsiaAfter the establishment of the Ilkhanate, the counterweight trebuchet continued to serve as a standard siege engine, playing an important role in suppressing local rebellions and in subsequent campaigns.