Military history of Ireland
The Vikings pillaged monasteries on Ireland's west coast in 795, and then spread out to cover the rest of the coastline. The north and east of the island were most affected. During the first 40 years, the raids were conducted by small, mobile Viking groups. From 830 on, the groups consisted of large fleets of Viking ships. From 840, the Vikings began establishing permanent bases at the coasts. Dublin was the most significant settlement in the long term. The Irish became accustomed to the Viking presence and culture and in many cases became allies, with intermarriage common throughout Ireland. A major Irish battle involving Vikings was fought at the Battle of Clontarf in 1014, in which a large force of Vikings and their Irish allies were defeated by the gathered Irish forces of Brian Boru, then the High King of Ireland along with a small contingent of Viking defectors. After this date Viking activity was sporadic with various Kings and nobles attempting to extend their power base. In 1099, Magnus Barefoot, the King of Norway, and his Viking army had successfully campaigned alongside their Irish allies against opposing Irish warbands. On his return his force was ambushed and killed on the north coast of Ireland.
Medieval: Total War
The Creative Assembly announced the development of an expansion pack, "Medieval: Total War – Viking Invasion", on 7 January 2003. The "Viking Invasion" expansion pack adds a Viking campaign taking place from 793 to 1066, set upon an expanded map of the British Isles and western Scandinavia. The campaign replaces the original factions with earlier Anglo-Saxon and Celtic kingdoms such as Wessex, Mercia, Wales and Scotland, as well as the Vikings. The Viking faction is designed to raid the British Isles; to achieve this the faction has access to faster ships and gains money for every building destroyed upon the battle map. The Anglo-Saxon and Celtic factions have the goal of repelling the Vikings and ultimately controlling the British Isles. New historical units were included with the expansion pack, such as the huskarls. "Medieval: Total War: Viking Invasion" brought several enhancements that were also added to the original campaign: flaming ammunition giving the player an option to set alight enemy castles, and a pre-battle deployment screen, allowing the player to organise their forces and view the terrain and opposing forces before the battle begins. In addition, three new factions were added to the main "Medieval: Total War" campaign, along with ribauldequin artillery and the game's patch. The expansion pack was released on 7 May 2003 in the United States and on 9 May in the United Kingdom.