Scandinavian Warriors in 9th c.

From The Rise and Fall of the Danish Empire, by Michael Bregnsbo and Kurt Villads Jensen (Palgrave Macmillan, 2022), Kindle pp. 62-64:

Ireland had previously been the target of Norwegian warriors, and in 851 Danes also started raiding the island. In 853 Ivar became king of Dublin and later participated in the conquest of York in 866. In 844 and 846 some of the armies that had fought in France pressed onwards to Galicia in northern Spain, and even to Arabic Lisbon: according to some later Spanish sources, these troops were dispatched by the Danish king Horik. In 854, 70 ships, led by Björn Ironside and Hastings, sailed from England via Spain to Morocco, into the Mediterranean, ultimately reaching Italy. Although it is difficult to measure the scale of these battles compared to earlier periods with fewer sources, it seems clear that the battles from the mid-800s onwards were vaster in scope, earning attention from their contemporaries who became the victims. There are three main reasons for this intensification of warfare.

First, it is clear that the Nordic longship had developed into a maneuverable and efficient war machine: Danish and Scandinavian fleets were famous and desired by other rulers for centuries to come. It probably wasn’t until around 1200 that other countries off the Atlantic coast built equally strong fleets; in the Mediterranean it probably happened in the early 1100s. Until then, the Scandinavians had a significant advantage at sea.

Secondly, the expansion in the 800s shows that Scandinavia was an extremely rich area. There is a very specific reason for that. With the rise of Islam in the 600s and the conquest of large parts of the Mediterranean world until the beginning of the 700s, Europe’s economic center of gravity shifted to the east. The link between East and West in the Mediterranean was left un-interrupted, but the Arab gold mines and new efficient exploitation of the Silk Road and its access to the East’s lucrative trade system provided an economic boost to the Byzantine Empire, particularly to the capital of Constantinople. The Scandinavians had access to this via the Gulf of Finland, Lake Ladoga in northwest Russia, and along the great Russian rivers to the Black Sea (Bjerg et al. 2013). Islam actually brought Scandinavia closer to being Europe’s economic center, becoming bridge and a transit area between the East and West. The vast quantities of gold coins found in Scandinavia clearly illustrate this. So far at least 200,000 Arabic gold coins have been excavated by archeologists, and with the spread of metal detectors more and more are discovered each year. Yet it is still only a small percentage of the many coins that were buried, and they represent only those treasures that were not dug up again by their owner or his heirs. Most of these immense riches were later invested towards war technology and political capital, in ships and men.

Third, most of these raiding expeditions were not random looting. Nor did they reflect a large-scale war between Denmark and other countries or between two cultures, one European and one Scandinavian, or between two religions, one Christian and one pagan. Rather, they were a natural element of an intricate political game between a variety of different rulers, with opponents and allied partners coming together across the political and religious spectrum.

The Danish wars in England were a continuation of old alliances across the North Sea. In northern England, Danish armies were apparently well received by the local population, whose elite probably had ancient Scandinavian roots. Several groups of warriors joined together to form the “great army” in 865, and in the coming years they conquered relatively easily East Anglia and Northumbria, which starting in around 870 came under Danish control. The Great Army threatened the kingdom of Mercia and Wessex in southern England, where it was stopped by King Alfred the Great. The warriors were soon followed by peasants who settled and cultivated the land. Danish had a lasting influence on the English language, and northern England became known as the Danelaw, the area under Danish law and control. We do know the names of several Danish commanders and kings located in England from the 800 and 900s. However, we don’t know if these kings also simultaneously ruled over anything back in Denmark. English sources say that they occasionally returned home to Denmark. This indicates that the relationship would have been close at the time, and the involvement in England clearly had a profound effect on the political hierarchy and power dynamics in Denmark.

The same certainly applies to the Frankish empire. One of the most important defensive strategies of the French king against the attack of the Scandinavian armies was to quickly ally himself with other Scandinavian rulers who were given land to which to defend [like Rollo in Normandy].