"There is the vital spot," Alexander said. "If we can gain a foothold on that bank, have no fear of what may happen elsewhere. It will be easier than it was at the Granicus."
"The cavalry is coming," said Clitus, pointing toward the beach.
Alexander turned and saw the gayly caparisoned squadrons of the Persian right dashing into the river. The foam splashed about the knees of the horses and a forest of lances waved and tossed in the air.
"There is work for Parmenio," the young king remarked as the head of the column gained the shore.
He glanced once more along the Persian front, but the movement on the beach did not extend to the main force. It was clear that Darius intended to compel him to begin the infantry battle.
Alexander cantered down to the right of the phalanx, where he dismounted and placed himself at the head of the Agema. On the beach the Thessalians met the shock of the tremendous body of cavalry that had been launched against them. The impact bore them back, but even that rushing avalanche of horses and men could not break them. It dashed against their wall of steel, recoiled, and rolled on again, in successive waves, continually strengthened from the rear as fresh squadrons crossed the stream.
The Macedonian line quivered with eagerness. A page darted from Alexander's side along the front of the phalanx and spoke a word to Ptolemy, son of Lagus. Another sped to the Companions.
"Advance," he cried, "and charge when the king leads! This is the order!"
"Here we go!" cried Chares, clapping Nathan on the back with a blow that nearly hurled him from his horse. "Stick to Leonidas! He will find the best of the fighting for us, or we will drown him in the river!"
"The phalanx is moving!" Clearchus cried with shining eyes.
A dull throbbing beat through the air and the heavy centre started slowly forward, each man touching the arm of his neighbor and keeping step in parade order. The cadence of voices began to mingle with the drum beat and the wild music of the trumpets.
As they advanced, Clearchus gazed eagerly at the Persian line, every nerve stretched to the point of physical pain. He saw in the centre the ranks of the Greek mercenaries, ten times as deep as those of the phalanx, standing grim and motionless, in strange contrast with the restless flutter of the heterogeneous masses that surrounded them on three sides. He blushed to think that, when Persia stood at bay, Greeks could be found to range themselves with her against their own country. The thought passed through his mind that Alexander was right after all, and that Demosthenes and those who aided him to fan the flame of hostility to Macedon at home were really acting the part of traitors, not only to Athens, but to all Greece.