Overview
The Varangian Guard (, Tágma tōn Varángōn) was an elite unit of the Byzantine Army from the tenth to the fourteenth century who served as personal bodyguards to the Byzantine emperors. The Varangian Guard was known for being primarily composed of recruits from northern Europe, including mainly Norsemen from Scandinavia but also Anglo-Saxons from England. The recruitment of distant foreigners from outside Byzantium to serve as the emperor's personal guard was pursued as a deliberate policy, as they lacked local political loyalties and could be counted upon to suppress revolts by disloyal Byzantine factions.
The Rus' provided the earliest members of the Varangian Guard. They were in Byzantine service from as early as 874. The Guard was first formally constituted under Emperor Basil II in 988, following the Christianization of Kievan Rus' by Vladimir I of Kiev. Vladimir, who had recently usurped power in Kiev with an army of Varangian warriors, sent 6,000 men to Basil as part of a military assistance agreement. Basil's distrust of the native Byzantine guardsmen, whose loyalties often shifted with fatal consequences, as well as the proven loyalty of the Varangians, many of whom had previously served in Byzantium, led the Emperor to employ them as his personal guardsmen.
Immigrants from Scandinavia (predominantly immigrants from Sweden, but also elements from Denmark and Norway)<ref>Marika Mägi, In Austrvegr: The Role of the Eastern Baltic in Viking Age Communication Across the Baltic Sea, The Northern World, 84 (Leiden: Brill, 2018), p. 195, citing Alf Thulin, 'The Rus' of Nestor's Chronicle', Mediaeval Scandinavia, 13 (2000), 70–96.</ref> kept an almost entirely Norse cast to the organization until the late 11th century. According to the late Swedish historian Alf Henrikson in his book Svensk Historia (History of Sweden), the Norse Varangian guardsmen were recognized by long hair, a red ruby set in the left ear and ornamented dragons sewn on their chainmail shirts. During these years, Swedish men left to enlist in the Byzantine Varangian Guard in such numbers that a medieval Swedish law, Västgötalagen, from Västergötland declared no one could inherit while staying in "Greece"—the then Scandinavian term for the Byzantine Empire—to stop the emigration, especially as two other European courts simultaneously also recruited Scandinavians: Kievan Rus' c.
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