| Conflict: | Fall of Turbessel |
| Date: | 1151 |
| Place: | Turbessel |
| Result: | Muslim victory |
| Combatant1: | Zengids Sultanate of Rum Artuqids |
| Combatant2: | Byzantine Empire |
| Commander1: | Nur ad-Din Zengi Mesud I Kara Arslan |
| Commander2: | Manuel I Komnenos |
| Strength1: | Unknown |
| Strength2: | Unknown |
| Casualties1: | Unknown |
| Casualties2: | Unknown |
The Fall of Turbessel occurred in 1151 when the Turks seized Turbessel as well as other possessions that Joscelin II had just ceded to the Byzantines.[1] [2]
Following the fall of Edessa, Joscelin I] made Turbessel his new capital. He was taken captive by Nur ad-Din Zengi in 1150 and his wife, Beatrice de Saone took over; however, she was forced to cede Turbessel and other possessions to the Byzantines.[3]
In the spring of 1151 Nur ad-Din allied with Mesud and invaded the Byzantine territories, joined by Timurtash and Kara Arslan. The Byzantine garrisons were unable to resist the attacks and as a result Timurtash now ruled in Bira, Samosata, Cafersoud, Khourous and Qal’at ar-Rum, Mesud in Aintab and Duluk and Nur ad-Din in Azaz, Cyrrhus, Krak des Chevaliers, Tall-Khalid, Ravendan, Hisn Kerzin and Nahr al-Djauz. As well as Turbessel, Burj-ar-risas and Kafarlatha also fell to the Turks.