The Battle of Sessoyne is the decisive encounter between King Arthur and the Roman emperor Lucius in the campaign that began with Rome’s demand for tribute from Britain. Arthur’s victory ends with Lucius dead, the Roman army in flight, and the emperor’s own body sent toward Rome as an answer to the demand. The battle joins personal combat to imperial politics: Arthur refuses to recognize Rome’s authority, then makes the outcome of war speak for that refusal.

Causes and Background

The conflict begins when Rome’s ambassadors require Arthur to acknowledge Lucius as his overlord and pay the tribute said to be due from Britain. They invoke Julius Caesar’s conquest and Roman decrees, and threaten a punitive war if Arthur refuses. Arthur does not harm the envoys, despite young knights’ anger at their message; he orders that they be protected and given proper lodging, and says he will consult his council before answering. The dispute is therefore framed not simply as a battlefield quarrel but as a contest over who may claim sovereignty and demand payment.

Before the decisive battle, Arthur’s forces have already won a field against the Romans and brought prisoners to Paris. A senator who escaped reports the defeat to Lucius, warning him to withdraw and arguing that Arthur’s knights have proved overwhelmingly effective. Lucius rejects the warning as cowardly speech and sends King Leomie ahead with an army, intending to follow. Arthur receives private warning of the movement and sends his people to Sessoyne, taking towns and castles from the Romans as he prepares to confront the emperor.

Armies and Course of the Battle

Arthur arranges his forces in separate divisions so that the Romans cannot escape. He assigns Sir Cador to the rear guard and places Sir Launcelot, Sir Bors, Sir Kay, and Sir Marhaus among the knights attending his own person. When Lucius enters the valley of Sessoyne, Arthur’s displayed banner and surrounding forces leave the emperor facing the choice to fight or surrender. Lucius urges the Romans to defend Rome’s claim to rule the world, and the armies meet in a prolonged battle in which the advantage shifts between the sides.

Arthur fights among his men, using Excalibur where the Romans press hardest and rescuing his people. He also kills the giant Galapas, who is fighting on the Roman side. Sir Gawaine distinguishes himself by killing three admirals, and the Knights of the Round Table fight throughout the engagement. The narrative says that the many individual feats would require a whole volume to recount, but focuses its climactic action on the two rulers.

Lucius and Arthur meet in combat. Lucius wounds Arthur in the face; Arthur answers with Excalibur and kills the emperor. Once Lucius’s death is known, the Romans flee, and Arthur’s forces pursue them. The account reports more than a hundred thousand Romans slain, then shifts from the victory itself to the king’s orders for care and burial.

The Dead and Arthur’s Message to Rome

Arthur has the dead from his own company buried according to their rank, and orders surgeons to treat the wounded without stinting on medicines. He also attends to the high-ranking dead on the Roman side. Beside Lucius, the account names the Sultan of Syria, the King of Egypt, the King of Ethiopia, seventeen other kings, and sixty Roman senators. Arthur orders their bodies embalmed, wrapped in many layers of cloth, and placed in lead coffins; their shields, arms, and banners are set with them so that their origins can be recognized.

Three senators survive. Arthur sends them back to Rome with the dead and a message for the Roman authorities: he will come to Rome himself, and the bodies are to stand as the tribute Rome demanded. He declares that Britain, Ireland, and Almaine owe Rome no other tribute, and commands the senators to tell the city’s officials and council not to demand further tribute or tax from his lands. The defeated embassy becomes a carefully staged reply: the dead are delivered as the payment, while Arthur rejects Rome’s continuing claim.

The senators carry Lucius alone in a cart covered with the imperial arms; the kings’ bodies follow in a chariot, with the senators’ bodies after them. In Rome, they recount the defeat and urge that no further war be made against Arthur, whose strength and the prowess of the Knights of the Round Table, they say, no earthly prince can match. The narrative then turns to Arthur’s advance into Almaine and Italy, making Sessoyne a victory that opens the next stage of his campaign rather than ending it.

Significance

Sessoyne brings the tribute dispute to a sharp reversal: the emperor who came to enforce Rome’s authority is killed, and his body is sent home as Arthur’s answer. The result depends both on the organized strength of Arthur’s host and on the king’s own encounter with Lucius. The battle thus makes political authority visible through action: Rome’s demand is met not with payment or submission but with defeat, burial, and a message carried by the very dead whose empire had claimed dominion over Arthur’s lands.