The army with which Alexius had to face the Normans was the mere wreck and shadow of that which Romanus IV. had led against the Turks ten years before. The military organization of the empire had gone to pieces, and we no longer hear of the old “Themes” of heavy cavalry which had formed its backbone. The new army contained quite a small proportion of national troops. Its core was the imperial guard of Varangians—the Russian, Danish, and English mercenaries, whose courage had won the confidence of so many emperors. With them marched many Turkish, Frankish, Servian, and South-Slavonic auxiliaries; the native element comprised the regulars of the three provinces of Thrace, Macedonia, and Thessaly, all that now remained in Alexius’ hands of the ancient East-Roman realm. Alexius brought Robert Guiscard to battle in front of Durazzo, and suffered a crushing defeat at his hands. The Emperor’s bad tactics were the main cause of his failure: his army came upon the ground in successive detachments, and the van was cut to pieces before the main body had reached the field. The brunt of the battle was borne by the Varangians: carried away by their fiery courage, they charged the Normans before the rest of Alexius’s troops had formed their line of battle. Rushing on the wing of Robert’s army, commanded by the Count of Bari, they drove it horse and foot into the sea. Their success, however, disordered their ranks, and the Norman duke was able to turn his whole force against them ere the Emperor was near enough to give them aid. A fierce cavalry charge cut off the greater part of the Varangians; the rest collected on a mound by the sea-shore, and for some time beat off the Normans with their axes, as King Harold’s men had done at Senlac on the last occasion when English and Norman had met. But Robert shot them down with his archers, and then sent more cavalry against them. They fell, save a small remnant who defended themselves in a ruined chapel, which Guiscard had finally to burn before he could make an end of its obstinate defenders. The rest of Alexius’s army only came into action when the Varangians had been destroyed. It was cowed by the loss of its best corps, fought badly, and fled in haste. Alexius himself, who lingered last upon the field, was surrounded, and only escaped by the speed of his horse and the strength of his sword-arm. Durazzo fell, and in the next year the Normans overran all Epirus and descended into Thessaly. Alexius risked two more engagements with them, but his inexperienced troops were defeated in both. Disaster taught him to avoid pitched battles, and at last, in 1083, after a more cautious campaign, his patience was rewarded by the dispersion of the Norman army. Catching it while divided, the Emperor inflicted on it a severe defeat at Larissa, and forced it back into Epirus. After this the war slackened, and when Robert Guiscard died in 1085 the Norman danger passed away.