
The question of who was more successful at warfare – the Anglo-Saxons or the Vikings – is complex, shaped by centuries of conflict, evolving tactics, and changing political landscapes. Both peoples produced legendary warriors and left indelible marks on the history of Britain and Europe. To determine who was “most successful,” we must consider not only battlefield victories, but also strategic innovation, long-term influence, and the ability to adapt and endure.
The Viking Approach to Warfare
Viking warfare was defined by its mobility, surprise, and adaptability. The Vikings, originating from Scandinavia, began their raids in the late 8th century, quickly gaining a fearsome reputation across Europe. Their longships allowed them to strike with little warning, raiding coastal settlements, monasteries, and towns, then disappearing before significant numbers of defenders could react. Their tactics were not limited to hit-and-run raids; over time, they escalated to full-scale invasions and the establishment of settlements, particularly in England, Ireland, and northern France.

Key aspects of Viking military success included:
- Superior naval technology: The longship enabled rapid movement along coasts and rivers, facilitating surprise attacks and quick withdrawals.
- Psychological warfare: The Vikings’ reputation for violence and unpredictability often caused panic, leading some communities to surrender or pay tribute without resistance.
- Flexible organization: Viking bands could unite into larger armies for major campaigns, as seen with the Great Heathen Army that invaded England in 865, or split into smaller raiding parties for mobility.
- Adaptation and settlement: As their ambitions grew, Vikings shifted from raiding to conquest and colonization, creating the Danelaw in England and Normandy in France.
Their early successes were dramatic. Between 867 and 874, the Vikings conquered or heavily disrupted the Anglo-Saxon kingdoms of East Anglia, Mercia, and Northumbria. Only Wessex, under Alfred the Great, withstood the onslaught.
Anglo-Saxon Warfare and Adaptation
The Anglo-Saxons were no strangers to war. Their society was shaped by frequent conflicts between rival kingdoms and against external foes. Initially, their military system was designed for local defense and internal power struggles, not for repelling the highly mobile Viking threat. This left them vulnerable to the Vikings’ rapid raids and invasions.
However, the Anglo-Saxons proved remarkably resilient and innovative in the face of near-destruction. Their greatest military leader, Alfred the Great, recognized the inadequacies of traditional Anglo-Saxon defenses and implemented sweeping reforms:
- Burghal system: Alfred constructed a network of fortified towns (burhs) across Wessex, each within a day’s march of its neighbors. These strongholds provided refuge for civilians and bases for counter-attacks, blunting the effectiveness of Viking raids.
- Reformed fyrd: The old system of sporadic military levies was replaced by a standing, rotating force, ensuring that Wessex always had troops available for both offense and defense.
- Mounted troops: Alfred adopted the use of horses to increase the mobility of his forces, enabling faster responses to threats.
- Strategic counter-raiding: Anglo-Saxon forces began to use Viking tactics against them, launching their own raids and harrying enemy-held territory.

These reforms paid off. After the Battle of Edington in 878, Alfred forced the Vikings to retreat and secured a treaty that established the Danelaw, dividing England between Anglo-Saxon and Viking control. Over the next century, Alfred’s successors – most notably his son Edward the Elder and grandson Æthelstan – used the reformed military system to reconquer Viking-held territory and unify England under Anglo-Saxon rule.
Comparing Success: Metrics and Outcomes
To judge “success” in warfare, we must consider several dimensions:
Early Viking Supremacy
In the 9th century, the Vikings were undeniably more successful. Their mobility and shock tactics overwhelmed the Anglo-Saxon kingdoms, leading to the fall of East Anglia, Mercia, and Northumbria, and the establishment of the Danelaw – a vast region under Viking control. Their raids extended across Europe, and they extracted tribute from rulers as powerful as Charlemagne.
Anglo-Saxon Recovery and Triumph
Yet, the story does not end with Viking conquest. The Anglo-Saxon response, particularly under Alfred the Great, marked a turning point. By rethinking their military system and fortifying their society, they not only survived but eventually reversed Viking gains. The reconquest of the Danelaw and the unification of England under Æthelstan in the early 10th century was a remarkable feat, achieved against formidable odds.
The Final Century: Viking Resurgence and Defeat
The 10th and early 11th centuries saw renewed Viking invasions, particularly by Danish kings like Sweyn Forkbeard and Cnut the Great. The Anglo-Saxons suffered defeats, such as at the Battle of Maldon (991) and Assandun (1016), and for a time, England was ruled by Danish kings. However, this period of Danish rule was relatively brief, and the Anglo-Saxon line was restored before the Norman Conquest of 1066.

Conclusion: Who Were Most Successful?
If success is measured by initial impact and the ability to disrupt and conquer, the Vikings were more successful in the early phases of their campaigns. Their raids and invasions reshaped the political map of England and left a lasting legacy in language, culture, and place names.
If success is measured by long-term endurance, adaptation, and the creation of a unified, lasting state, the Anglo-Saxons ultimately proved more successful. They survived near-annihilation, reformed their military and political systems, and reconquered lost territory, laying the foundations for the medieval English kingdom.
In the end, the Anglo-Saxons’ ability to learn from their enemies and innovate allowed them to reclaim and unify their land, while the Vikings’ greatest legacy was their influence as settlers and rulers, rather than as enduring conquerors.