Battle of Hastings
A rumour started that the duke had been killed, which added to the confusion. The English forces began to pursue the fleeing invaders, but William rode through his forces, showing his face and yelling that he was still alive. The duke then led a counter-attack against the pursuing English forces; some of the English rallied on a hillock before being overwhelmed.
It is not known whether the English pursuit was ordered by Harold or if it was spontaneous. Wace relates that Harold ordered his men to stay in their formations but no other account gives this detail. The Bayeux Tapestry depicts the death of Harold's brothers Gyrth and Leofwine occurring just before the fight around the hillock. This may mean that the two brothers led the pursuit. The Carmen de Hastingae Proelio relates a different story for the death of Gyrth, stating that the duke slew Harold's brother in combat, perhaps thinking that Gyrth was Harold. William of Poitiers states that the bodies of Gyrth and Leofwine were found near Harold's, implying that they died late in the battle. It is possible that if the two brothers died early in the fighting their bodies were taken to Harold, thus accounting for their being found near his body after the battle. The military historian Peter Marren speculates that if Gyrth and Leofwine died early in the battle, that may have influenced Harold to stand and fight to the end.

Feigned flights: A lull probably occurred early in the afternoon, and a break for rest and food would probably have been needed. William may have also needed time to implement a new strategy, which may have been inspired by the English pursuit and subsequent rout by the Normans. If the Normans could send their cavalry against the shield wall and then draw the English into more pursuits, breaks in the English line might form. William of Poitiers says the tactic was used twice. Although arguments have been made that the chroniclers' accounts of this tactic were meant to excuse the flight of the Norman troops from battle, this is unlikely as the earlier flight was not glossed over. It was a tactic used by other Norman armies during the period. Some historians have argued that the story of the use of feigned flight as a deliberate tactic was invented after the battle; however most historians agree that it was used by the Normans at Hastings.
Although the feigned flights did not break the lines, they probably thinned out the housecarls in the English shield wall. The housecarls were replaced with members of the fyrd, and the shield wall held. Archers appear to have been used again before and during an assault by the cavalry and infantry led by the duke. Although 12th-century sources state that the archers were ordered to shoot at a high angle to shoot over the front of the shield wall, there is no trace of such an action in the more contemporary accounts. It is not known how many assaults were launched against the English lines, but some sources record various actions by both Normans and Englishmen that took place during the afternoon's fighting. The Carmen claims that Duke William had two horses killed under him during the fighting, but William of Poitiers's account states that it was three.

Death of Harold: Harold appears to have died late in the battle, although accounts in the various sources are contradictory. William of Poitiers only mentions his death, without giving any details on how it occurred. The Tapestry is not helpful, as it shows a figure holding an arrow sticking out of his eye next to a falling fighter being hit with a sword. Over both figures is a statement "Here King Harold has been killed". It is not clear which figure is meant to be Harold, or if both are meant. The earliest written mention of the traditional account of Harold dying from an arrow to the eye dates to the 1080s from a history of the Normans written by an Italian monk, Amatus of Montecassino. William of Malmesbury stated that Harold died from an arrow to the eye that went into the brain, and that a knight wounded Harold at the same time. Wace repeats the arrow-to-the-eye account. The Carmen states that Duke William killed Harold, but this is unlikely, as such a feat would have been recorded elsewhere. The account of William of Jumièges is even more unlikely, as it has Harold dying in the morning, during the first fighting. The Chronicle of Battle Abbey states that no one knew who killed Harold, as it happened in the press of battle. A modern biographer of Harold, Ian Walker, states that Harold probably died from an arrow in the eye, although he also says it is possible that Harold was struck down by a Norman knight while mortally wounded in the eye. Another biographer of Harold, Peter Rex, after discussing the various accounts, concludes that it is not possible to declare how Harold died.
Harold's death left the English forces leaderless, and they began to collapse. Many of them fled, but the soldiers of the royal household gathered around Harold's body and fought to the end. The Normans began to pursue the fleeing troops, and except for a rearguard action at a site known as the "Malfosse", the battle was over. Exactly what happened at the Malfosse, or "Evil Ditch", and where it took place, is unclear. It occurred at a small fortification or set of trenches where some Englishmen rallied and seriously wounded Eustace of Boulogne before being defeated by the Normans.

Reasons for the outcome: Harold's defeat was probably due to several circumstances. One was the need to defend against two almost simultaneous invasions. The fact that Harold had dismissed his forces in southern England on 8 September also contributed to the defeat. Many historians fault Harold for hurrying south and not gathering more forces before confronting William at Hastings, although it is not clear that the English forces were insufficient to deal with William's forces. Against these arguments for an exhausted English army, the length of the battle, which lasted an entire day, shows that the English forces were not tired by their long march. Tied in with the speed of Harold's advance to Hastings is the possibility Harold may not have trusted Earls Edwin of Mercia and Morcar of Northumbria once their enemy Tostig had been defeated, and declined to bring them and their forces south. Modern historians have pointed out that one reason for Harold's rush to battle was to contain William's depredations and keep him from breaking free of his beachhead.
Most of the blame for the defeat probably lies in the events of the battle. William was the more experienced military leader, and in addition the lack of cavalry on the English side allowed Harold fewer tactical options. Some writers have criticised Harold for not exploiting the opportunity offered by the rumoured death of William early in the battle. The English appear to have erred in not staying strictly on the defensive, for when they pursued the retreating Normans they exposed their flanks to attack. Whether this was due to the inexperience of the English commanders or the indiscipline of the English soldiers is unclear. In the end, Harold's death appears to have been decisive, as it signalled the break-up of the English forces in disarray. The historian David Nicolle said of the battle that William's army "demonstrated – not without difficulty – the superiority of Norman-French mixed cavalry and infantry tactics over the Germanic-Scandinavian infantry traditions of the Anglo-Saxons."

Aftermath: The day after the battle, Harold's body was identified, either by his armour or by marks on his body.  His personal standard was presented to William, and later sent to the papacy. The bodies of the English dead, including some of Harold's brothers and housecarls, were left on the battlefield, although some were removed by relatives later. The Norman dead were buried in a large communal grave, which has not been found. Exact casualty figures are unknown. Of the Englishmen known to be at the battle, the number of dead implies that the death rate was about 50 per cent of those engaged, although this may be too high. Of the named Normans who fought at Hastings, one in seven is stated to have died, but these were all noblemen, and it is probable that the death rate among the common soldiers was higher. Although Orderic Vitalis's figures are highly exaggerated, his ratio of one in four casualties may be accurate. Marren speculates that perhaps 2,000 Normans and 4,000 Englishmen were killed at Hastings. Reports stated that some of the English dead were still being found on the hillside years later. Although scholars thought for a long time that remains would not be recoverable, due to the acidic soil, recent finds have changed this view. One skeleton that was found in a medieval cemetery, and originally was thought to be associated with the 13th century Battle of Lewes, now is thought to be associated with Hastings instead.
One story relates that Gytha, Harold's mother, offered the victorious duke the weight of her son's body in gold for its custody, but was refused. William ordered that Harold's body be thrown into the sea, but whether that took place is unclear. Another story relates that Harold was buried at the top of a cliff. Waltham Abbey, which had been founded by Harold, later claimed that his body had been secretly buried there. Other legends claimed that Harold did not die at Hastings, but escaped and became a hermit at Chester.