of Alexios I; the scholai, Immortals (athanatoi), and exkoubitoi are not mentioned in the reigns of his immediate successors. The notable exceptions to this process being the Varangians and vestiaritai, and probably the archontopouloi. The hetaireia (literally "companions"), commanded by the megas hetaireiarchēs, is still mentioned, though it was always more a collection of individual units under an administrative title than a single regiment. In this period, the Varangian Guard consisted of Englishmen, Russians, and Scandinavians, totalling 5,000 men. Immediately after the Battle of Dyrrachion, Alexios I recruited 2,000 men to form the tagma of the archontopouloi. The Vardariots, a cavalry unit initially recruited from the Christianized Magyars of the Vardar valley, were a later addition to the guard and were probably raised by John II. They were commanded by an officer with the rank of primmikērios. Of increasing importance during the family-centric Komnenian period were the men known as oikeioi (, "those of the household"); when mobilized for war the oikeioi were the equivalent of the household knights of western kings and would have served as kataphraktoi. These household troops would have included the emperor's personal retinue, his relatives and close associates, also accompanied by their immediate retinues, and the young aristocrats attached to the court; plus they probably also included the vestiaritai guards. The oikeioi would have been equipped with the finest arms and armour and mounted on the highest quality war-horses available. Although not an entirely formal regiment the "household" (oikos) would have been a formidable fighting force, however, it would have been available only when the emperor took the field in person. Officers of the vestiaritai were given the lofty court title of sebastos and two of their number, Andronikos Lampardas and Alexios Petraliphas, were prominent generals. Under Alexios I, and probably subsequently, the imperial oikos also served as a sort of "staff college" for training promising young officers. Alexios took 300 young officers into his household, whom he trained personally. In the campaign against Bohemond I of Antioch in 1107–1108 the best of these officers commanded the blockading forces keeping the Norman army pent up on the Albanian coast. The victorious outcome of this campaign probably resulted, in part, from the increased discipline the Byzantine forces showed due to the quality of their commanders. Native regiments In the course of the 11th century the units of part-time soldier-farmers belonging to the themata (military provinces) were