Alexander himself took a conspicuous and a very active part in the contest. He was easily recognized on the field of battle by his dress, and by a white plume which he wore in his helmet. He exposed himself to the most imminent danger. At one time, when desperately engaged with a troop of horse, which had galloped down upon him, a Persian horseman aimed a blow at his head with a sword. Alexander saved his head from the blow, but it took off his plume and a part of his helmet. Alexander immediately thrust his antagonist through the body. At the same moment, another horseman, on another side, had his sword raised, and would have killed Alexander before he could have turned to defend himself, had no help intervened; but just at this instant a third combatant, one of Alexander's friends, seeing the danger, brought down so terrible a blow upon the shoulder of this second assailant as to separate his arm from his body.