Whilst a conspiracy of women and eunuchs was concerted with prudence, and conducted with rapid vigor, Macrinus, who, by a decisive motion, might have crushed his infant enemy, floated between the opposite extremes of terror and security, which alike fixed him inactive at Antioch. A spirit of rebellion diffused itself through all the camps and garrisons of Syria, successive detachments murdered their officers, and joined the party of the rebels; and the tardy restitution of military pay and privileges was imputed to the acknowledged weakness of Macrinus. At length he marched out of Antioch, to meet the increasing and zealous army of the young pretender. His own troops seemed to take the field with faintness and reluctance; but, in the heat of the battle, the Prætorian guards, almost by an involuntary impulse, asserted the superiority of their valor and discipline. The rebel ranks were broken; when the mother and grandmother of the Syrian prince, who, according to their eastern custom, had attended the army, threw themselves from their covered chariots, and, by exciting the compassion of the soldiers, endeavored to animate their drooping courage. Antoninus himself, who, in the rest of his life, never acted like a man, in this important crisis of his fate, approved himself a hero, mounted his horse, and, at the head of his rallied troops, charged sword in hand among the thickest of the enemy; whilst the eunuch Gannys, * whose occupations had been confined to female cares and the soft luxury of Asia, displayed the talents of an able and experienced general. The battle still raged with doubtful violence, and Macrinus might have obtained the victory, had he not betrayed his own cause by a shameful and precipitate flight. His cowardice served only to protract his life a few days, and to stamp deserved ignominy on his misfortunes. It is scarcely necessary to add, that his son Diadumenianus was involved in the same fate. As soon as the stubborn Prætorians could be convinced that they fought for a prince who had basely deserted them, they surrendered to the conqueror: the contending parties of the Roman army, mingling tears of joy and tenderness, united under the banners of the imagined son of Caracalla, and the East acknowledged with pleasure the first emperor of Asiatic extraction.