The king was furious to see their close ranks give way time after time, and finally ordered his own Immortals to march on and scatter the army, which, although so small, was keeping millions of men at bay. He expected that everything would of course give way at the very first charge of these troops.
Imagine his wrath, therefore, when he saw the Immortals also retreat, after many useless efforts to drive away the enemy. The Persians did not know what to do. They could not advance, and were ashamed to retreat.