 Manuel made serious tactical errors, such as failing to properly scout out the route ahead. These failings caused him to lead his forces straight into a classic ambush. On 17 September 1176 Manuel was decisively defeated by Seljuk Sultan Kilij Arslan II at the Battle of Myriokephalon (in highlands near the Tzibritze pass), in which his army was ambushed while marching through the narrow mountain pass. The Byzantines were too dispersed, and were surrounded. The army's siege equipment was quickly destroyed, and Manuel was forced to withdraw – without siege engines, the conquest of Iconium was impossible. According to Byzantine sources, Manuel lost his nerve both during and after the battle, fluctuating between extremes of self-delusion and self-abasement; according to William of Tyre, he was never the same again.
