But the troops which had been sent against Genseric were hastily recalled from Sicily; the garrisons on the side of Persia were exhausted; and a military force was collected in Europe, formidable by their arms and numbers, if the generals had understood the science of command and their soldiers the duty of obedience. The armies of the Eastern Empire were vanquished in three successive engagements; and the progress of Attila may be traced by the fields of battle. The two former, on the banks of the Utus and under the walls of Marcianapolis, were fought in the extensive plains between the Danube and Mount Hæmus. As the Romans were pressed by a victorious enemy, they gradually and unskilfully retired toward the Chersonesus of Thrace; and that narrow peninsula, the last extremity of the land, was marked by their third, and irreparable, defeat.
By the destruction of this army Attila acquired the indisputable possession of the field. From the Hellespont to Thermopylæ, and the suburbs of Constantinople, he ravaged, without resistance and without mercy, the provinces of Thrace and Macedonia. Heraclea and Hadrianople might, perhaps, escape this dreadful irruption of the Huns; but the words, the most expressive of total extirpation and erasure, are applied to the calamities which they inflicted on seventy cities of the Eastern Empire. Theodosius, his court, and the unwarlike people were protected by the walls of Constantinople; but those waits had been shaken by a recent earthquake, and the fall of fifty-eight towers had opened a large and tremendous breach. The damage indeed was speedily repaired; but this accident was aggravated by a superstitious fear, that heaven itself had delivered the imperial city to the shepherds of Scythia, who were strangers to the laws, the language, and the religion of the Romans.
In all their invasions of the civilized empires of the South, the Scythian shepherds have been uniformly actuated by a savage and destructive spirit. The laws of war, that restrain the exercise of national rapine and murder, are founded on two principles of substantial interest: the knowledge of the permanent benefits which may be obtained by a moderate use of conquest; and a just apprehension, lest the desolation which we inflict on the enemy's country may be retaliated on our own. But these considerations of hope and fear are almost unknown in the pastoral state of nations. The Huns of Attila may, without injustice, be compared to the Moguls and Tartars, before their primitive manners were changed by religion and luxury.