The Great Heathen Army lands in England
A coalition force, not a raiding party, arrives to conquer rather than plunder
Quick facts
- Landing site
- Isle of Thanet, Kent
- Date
- 865 CE
- Named leaders
- Ivar the Boneless, Halfdan, Ubbe
- Duration of campaign
- 14 years (865-878)
What happened
Late in 865 a large combined Scandinavian force, remembered as the Great Heathen Army, landed on the Isle of Thanet in Kent. Unlike earlier hit-and-run raids, this army meant to conquer territory, and English chroniclers named its leaders as sons of the semi-legendary Ragnar Lothbrok, including Ivar the Boneless, Halfdan, and Ubbe, said to be seeking revenge for their father's death at an English king's hands. The Vikings extracted a tribute payment from Kent and then broke the truce, before wintering in East Anglia and marching on Northumbria's capital, York, by late 866.
Why it matters
Over the following 14 years this army overran three of England's four kingdoms in turn, East Anglia, Northumbria, and Mercia, killing or exiling their kings and leaving only Wessex standing. It set up the confrontation with Alfred the Great that would eventually split England between Anglo-Saxon and Danish rule.
How we know
The Anglo-Saxon Chronicle tracks the army's movements year by year; its size is not given a firm number in any surviving source, though chroniclers described it as unusually large.
Sources
- World History Encyclopedia. Battle of Ashdown: The First Major Defeat of the Great Heathen Army · Reputable sourceworldhistory.org · The domain "worldhistory.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
- World History Encyclopedia. Battle of Ashdown: The First Major Defeat of the Great Heathen Army · Reputable sourceworldhistory.org · The domain "worldhistory.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
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