Marcus Aurelius having long attempted, without success, to subdue the Germans by his generals, resolved in the thirteenth year of his reign, and of Christ 171, to lead a powerful army against them. He was beyond the Danube, (for Germany was extended much further eastward than it is at present,) when the Quadi, a people inhabiting that tract now called Moravia, surrounded him in a very disadvantageous situation, so that there was no possibility that either he or his army could escape out of their hands, or subsist long where they were, for want of water. The twelfth legion, called the Melitine, from a town of that name in Armenia, where it had been quartered a long time, was chiefly composed of Christians. These, when the army was drawn up, but languid and perishing with thirst, fell upon their knees, "as we are accustomed to do at prayer," says Eusebius, and poured forth earnest supplications to God in this public extremity of their state and emperor, though hitherto he had been a persecutor of their religion. The strangeness of the sight surprised the enemies, who had more reason to be astonished at the event; for all on a sudden the sky was darkened with clouds, and a thick rain showered down with impetuosity just as the Barbarians had assailed the Roman camp. The Romans fought and drank at the same time, catching the rain, as it fell, in their helmets, and often swallowing it mingled with blood. Though by this means exceedingly refreshed, the Germans were much too strong for them; but the storm being driven by a violent wind upon their faces, and accompanied with dreadful flashes of lightning, and loud thunder, the Germans were deprived of their sight, beaten down to the ground, and terrified to such a degree, that they were entirely routed and put to flight. Both heathen and Christian writers give this account of the victory. The heathens ascribe it, some to the power of {109} magic, others to their gods, as Dio Cassius;[3] but the Christians unanimously recount it as a miracle obtained by the prayers of this legion, as St. Apollinaris in his apology to this very emperor, who adds, that as an acknowledgment, the emperor immediately gave it the name of the Thundering Legion, and from him it is so called by Eusebius,[4] Tertullian,[5] St. Jerom,[6] and St. Gregory of Nyssa.[7]