Companion cavalry
Darius now launched his chariots at those troops under Alexander's personal command; many of the chariots were intercepted by the Agrianians and other javelin-throwers posted in front of the Companion cavalry. Those chariots who made it through the barrage of javelins charged the Macedonian lines, which responded by opening up their ranks, creating alleys through which the chariots passed harmlessly. The Hypaspists and the armed grooms of the cavalry then attacked and eliminated these survivors.