far inferior in personal strength and military discipline to Alexander's men. With such force and such equipment Poros awaited the attack of the greatest military genius whom the world has seen.
Alexander clearly perceived that his small force would have no chance of success in a direct attack upon the enemy's centre, and resolved to rely on the effect of a vigorous cavalry charge against the Indian left wing. The generals in command of the six thousand infantry at his disposal were ordered to play a waiting game, and to take no part in the action until they should see the Indian foot and horse thrown into confusion by the charge of cavalry under Alexander's personal command.
He opened the action by sending his mounted archers, a thousand strong, against the left wing of the Indian army, which must have extended close to the bank of the river. The archers discharged a storm of arrows and made furious charges. They were quickly followed by the Guards led by Alexander himself. The Indian cavalry on the right wing hurried round by the rear to support their hard-pressed comrades on the left. But meantime two regiments of horse commanded by Koinos, which had been detached by Alexander for the purpose, swept past the front of the immobile host of Poros, galloped round its right wing, and threatened the rear of the Indian cavalry and chariots. While the Indian squadrons were endeavouring to effect a partial change of front to meet the impending onset from the rear, they necessarily fell into a certain amount of con-
