Bursuq invaded Edessa in early 1115 , but he soon marched on to Aleppo .
The sultan made Bursuq bin Bursuq of Hamadan the supreme commander of the Seljuq armies .
supreme commander invaded Edessa in early 1115 , but he soon marched on to Aleppo .
The sultan made Bursuq bin Bursuq of Hamadan the supreme commander of the Seljuq armies .