1066: The Succession Crisis, Three Claimants and the Campaign for England

1066 was not one battle. It was a succession crisis that became a three-sided struggle for a kingdom, followed by two major invasions, rapid mobilisation, a defeat at Fulford, a decisive English victory at Stamford Bridge, a second landing on the south coast and another forced march to Hastings. The famous battle of 14 October makes sense only when the whole campaign is put back around it.

For Harold Godwinson, the central problem was not simply defeating William of Normandy. It was defending a long coastline while the political legitimacy of his kingship was contested and while another claimant, Harald Hardrada of Norway, could strike from a completely different direction. His reign lasted barely nine and a half months. In that time he faced his exiled brother Tostig, a Norwegian invasion and the Norman invasion that killed him.

The political problem: a king dies without an heir

Edward the Confessor died on 5 January 1066 without a son. That absence of a direct heir mattered because eleventh-century English kingship did not operate through a single, automatic rule of primogeniture. Royal blood, designation, political support and the ability to command the kingdom all mattered. The witan—the king’s leading ecclesiastical and secular magnates—recognised Harold Godwinson, the most powerful English earl, and he was crowned on 6 January.

That did not settle the question outside England. Duke William of Normandy maintained that Edward had previously promised him the succession and that Harold had later sworn to support William’s claim. The Norman case is strongly represented in sources associated with the victors, particularly William of Poitiers and the Bayeux Tapestry. English traditions differ. The surviving evidence therefore has to be read as political evidence as well as narrative evidence: every major account was produced within a world shaped by the conquest.

A third major claimant was Harald Sigurdsson—Harald Hardrada—king of Norway. His claim was rooted in Scandinavian agreements and earlier Danish-Norwegian claims to the English crown. In practical terms, Hardrada’s danger was amplified by an English ally: Tostig Godwinson, Harold’s estranged younger brother and former Earl of Northumbria, who had been driven into exile in 1065.

The claimants

Edgar Ætheling, the teenage grandson of Edmund Ironside, also possessed royal blood and would later be proclaimed king after Harold’s death, but in January 1066 he lacked the age, political weight and military following to compete on equal terms with Harold, William or Hardrada.

The campaign map: one kingdom, two invasion axes

The geography explains much of the campaign. Hardrada and Tostig attacked through the Humber and the Ouse toward York. William crossed the Channel and landed at Pevensey in Sussex. Harold could not stand between both indefinitely. Once the northern invasion became the immediate threat, he had to move his field army north; when William landed, the direction of movement reversed.

Spring and summer 1066: waiting for William

William’s invasion was not improvised after Harold’s coronation. It required a substantial maritime mobilisation: ships had to be built or assembled, men and horses concentrated, supplies gathered and political support secured. Norman sources also emphasise papal support, symbolised by a papal banner. The exact political process behind that support is debated, but it strengthened William’s presentation of the expedition as more than a private raid.

Harold expected an invasion from across the Channel and assembled forces along the south coast during the summer. That defence could not remain mobilised indefinitely. The fyrd was not a modern standing army, and keeping men away from farms and local obligations imposed costs. By early September, with provisions running short and the campaigning season advancing, Harold released much of the force.

That timing mattered. The wind that had delayed William also delayed the confrontation Harold expected. The threat that actually arrived first came from the north.

Tostig, Hardrada and the northern invasion

Tostig had already tested England’s defences earlier in the year with raids along the coast. His decisive move was to join Hardrada. The Norwegian king sailed with a large fleet, entered the Humber and advanced toward York.

The northern earls Edwin of Mercia and Morcar of Northumbria met the invaders at Fulford on 20 September 1066. Their defeat opened York to Hardrada. The city submitted and arrangements were made for hostages and support to be delivered at Stamford Bridge, east of York.

For Hardrada, Fulford looked like the operational breakthrough. For Harold, it created an emergency.

The first forced march: London to Yorkshire

Harold moved north with exceptional speed. The Anglo-Saxon Chronicle describes him travelling by day and night. The often-repeated idea of a single army marching every mile together should be treated carefully: a royal army could gather men along its route, detach others and use mounted movement for key troops and commanders. What matters is the strategic result. Harold appeared in Yorkshire before Hardrada expected him.

On 25 September, only five days after Fulford, Harold attacked the Norwegians at Stamford Bridge. Hardrada and Tostig were killed. The Norwegian army was shattered so thoroughly that later tradition remembered the survivors leaving in only a fraction of the ships that had brought the invasion force to England.

The victory was decisive—but it did not end the campaign.

William lands while Harold is in the north

Three days after Stamford Bridge, William landed on the Sussex coast at Pevensey. He then established himself around Hastings, using the area as a base and applying pressure through foraging and devastation. This was not merely supply activity. It challenged Harold politically as well as militarily: a claimant to the throne was occupying and damaging territory closely associated with Harold’s own family.

William’s timing was extraordinarily favourable. Whether by design or fortune, the Norman crossing came after Harold had committed himself hundreds of miles away and after the English army had fought a major battle.

The second forced march: Yorkshire to the south

Harold now faced a choice. He could wait, assemble a larger force and let William remain in Sussex, or move rapidly to confront him. He chose speed. He returned toward London, gathered troops and moved into Sussex.

Later writers have debated whether he attacked too quickly. That question is useful only if we recognise the pressures behind it. William was not sitting harmlessly on a beach. He was consolidating a lodgement, drawing supplies, fortifying positions and attacking the political credibility of Harold’s kingship. Delay also risked allowing more men to join William or weakening Harold’s authority among magnates whose loyalty was not guaranteed.

What the armies looked like

The English

Harold’s army combined the king’s professional household troops—most famously the housecarls—with aristocratic retinues and men raised through the fyrd. The classic English battlefield method depended on dense infantry cohesion. Large shields overlapped or supported one another; spears and axes worked from within a compact line; and the formation used terrain to make a frontal assault difficult.

It is misleading to imagine every English soldier as identical. Equipment, experience and social status varied. The housecarls were not simply a separate block of axe-men standing apart from everyone else, and the fyrd should not be reduced to an untrained peasant mob. The army was an infantry force whose effectiveness depended heavily on cohesion.

The Normans and their allies

William’s army offered a broader tactical mix: archers, infantry and mounted warriors. Contingents came not only from Normandy but from neighbouring regions attracted by patronage, land, religious sanction, obligation or opportunity. Cavalry gave William tactical options Harold did not possess, but horses did not automatically make a charge decisive. Against a firm shield wall on rising ground, mounted attacks could fail repeatedly.

The Norwegians

Hardrada’s force was also fundamentally an infantry army transported by sea. It included experienced warriors from a king whose career had ranged across Scandinavia, Rus’ and the Byzantine world. At Stamford Bridge, however, strategic surprise and the circumstances in which the Norwegians were assembled mattered as much as reputation.

Order of battle: what can actually be said

Exact medieval strengths are uncertain. Chroniclers were not modern staff officers and numerical claims often served rhetorical purposes. Modern estimates for Hastings commonly place each army somewhere around 5,000–7,000 men, but the evidence cannot support a precise parade-state figure. Fulford and Stamford Bridge are even harder to quantify securely.

Force	Command	Core elements	Caution
English royal army	Harold II	Housecarls, aristocratic retinues, fyrd infantry	Strength changed as men were summoned, dismissed, lost and gathered during two long marches.
Norwegian invasion army	Harald Hardrada and Tostig	Norwegian and allied infantry transported by fleet	Ship totals do not translate cleanly into fighting strength.
Norman-led invasion army	Duke William	Archers, infantry, mounted warriors; Norman and allied contingents	Contemporary totals are contested; modern estimates are ranges, not exact figures.

Chronology: the road to Hastings

• 5 January: Edward the Confessor dies.
• 6 January: Harold Godwinson is crowned king.
• Spring: Tostig raids England and seeks support abroad.
• Summer: William assembles his invasion fleet and army; Harold maintains a southern defence.
• Early September: Harold releases much of the coastal force as the mobilisation becomes difficult to sustain.
• 18 September: Hardrada’s fleet moves into the Ouse system toward York.
• 20 September: Edwin and Morcar are defeated at Fulford.
• 21–24 September: York submits; Hardrada arranges a meeting for hostages and support at Stamford Bridge.
• 25 September: Harold defeats Hardrada and Tostig at Stamford Bridge.
• 28 September: William lands at Pevensey.
• Early October: Harold returns south and assembles forces around London.
• 14 October: Hastings. Harold is killed; William wins the battle.
• 25 December: William is crowned king at Westminster.

Hastings: culmination, not isolated event

At Hastings, Harold took position on high ground across the route inland. The English shield wall presented William with the tactical problem of breaking infantry who had little reason to abandon a strong defensive position. The battle lasted most of the day—unusually long for the period—and included repeated Norman attacks, crises, withdrawals and renewed assaults.

The exact manner of Harold’s death remains famous but uncertain. The Bayeux Tapestry’s imagery has generated the enduring arrow-in-the-eye interpretation, while other readings identify the king with a nearby figure cut down by mounted attackers. The secure point is that Harold died during the collapse of the English position, along with members of his family and elite.

Why Harold’s campaign deserves more credit

The outcome can make the English campaign look like a simple failure. It was not. Harold responded to a northern invasion, travelled at remarkable speed, destroyed Hardrada’s army and then reversed direction to confront a second invasion. The strategic problem was extreme. Winning at Stamford Bridge did not reset the campaign; it consumed time, energy and men immediately before the Norman landing.

That does not mean Hastings was predetermined. William still had to cross successfully, sustain his army, force or accept battle, survive moments of disorder and eventually break the English position. But the context changes how the battle should be judged. Harold was not a rested commander choosing one opponent from one direction. He was a new king fighting a multi-front succession war.

Did Hastings finish the Norman Conquest?

No. Hastings killed Harold and destroyed the immediate royal field army, but conquest required much more than one battlefield victory. English leaders briefly rallied around Edgar Ætheling. William had to manoeuvre toward London, receive submissions, secure his coronation and then spend years suppressing resistance and imposing a new aristocratic order.

The political consequences were immense: landholding changed on a huge scale; a Norman and continental aristocracy replaced much of the English elite; castle-building transformed the military landscape; church leadership changed; and England’s political orientation became more closely tied to northern France.

What the sources can—and cannot—tell us

The 1066 evidence is unusually rich for the eleventh century but still partisan and incomplete. The Anglo-Saxon Chronicle preserves English perspectives in several manuscript traditions. William of Poitiers wrote from the Norman side and had every reason to legitimise William. The Bayeux Tapestry is visual narrative, not battlefield photography. Later writers such as William of Malmesbury preserve important traditions but wrote with hindsight.

That is why this Record avoids false precision. Where army strengths, casualty figures, oaths or exact battlefield episodes are disputed, they should be presented as ranges, traditions or interpretations rather than as settled facts.

Why 1066 matters

1066 changed the ruling class of England, the kingdom’s relationship with continental Europe and the physical landscape of power. But its military importance is just as useful. It shows the interaction of political legitimacy, maritime mobilisation, intelligence, logistics, forced movement and battlefield systems. The campaign was decided not by a single weapon or a single heroic act but by the accumulation of strategic choices across an entire year.

That is the point of treating 1066 as a campaign rather than reducing it to the last few hours on Senlac Hill.

---

Continue the 1066 series

• Stamford Bridge 1066: The Battle Before Hastings
• Hastings 1066: How One Day Changed England
• The Anglo-Saxon Shield Wall: How It Worked in Battle

From the archive to the collection

If the history brought you here first, keep it that way. The matching commercial archive comes after the reading: shop Conquest & Kingdoms or see the Hastings 1066 design.

Sources and further reading

1. English Heritage, 1066 and the Norman Conquest, overview and Battle of Hastings resources.
2. English Heritage, A Restless Reign: King Harold in 1066.
3. English Heritage, The Events of 1066.
4. English Heritage, What Happened at the Battle of Hastings?
5. English Heritage, History of Battle Abbey and Battlefield.
6. The Anglo-Saxon Chronicle, especially the 1066 annals across surviving recensions.
7. William of Poitiers, Gesta Guillelmi.
8. The Bayeux Tapestry, contemporary/near-contemporary visual narrative of the succession and invasion.
9. William of Jumièges, Gesta Normannorum Ducum.
10. Orderic Vitalis, Historia Ecclesiastica.
11. William of Malmesbury, Gesta Regum Anglorum.
12. David Bates, William the Conqueror, Yale University Press.
13. Marc Morris, The Norman Conquest, Windmill.
14. Peter Marren, 1066: The Battles of York, Stamford Bridge & Hastings, Leo Cooper.

Map note: the campaign map is by Amitchell125 and is reproduced from Wikimedia Commons under CC BY 3.0. It depicts the locations of major events and should be read as a campaign-orientation map rather than a reconstruction of exact march routes.

Editorial note: army numbers and some episodes of 1066 remain disputed. This article prefers ranges and explicitly identified traditions over unsupported precision. The Regimental Record is updated when stronger evidence or better scholarship warrants a correction.