River in NW Asia Minor (now Kocabaş)  scene of *Alexander (3) the Great's first victory over the Persians (334 bce) Of the sources *Arrian's version is probably preferable Alexander began the battle on the right  launching an attack on the Persian cavalry lining the river-bank with the left squadron of Companions (see hetairoi) and other cavalry between them and the phalanx to their left