But the king's side had the victory, for he was beyond himself with might and passion, and all his knights so fiercely followed him, that, in spite of all their multitude, they drove Sir Modred's army back with fearful wounds and slaughter, and slept that night upon the battle-field. But Sir Gawain was smitten by an arrow in the wound Sir Lancelot gave him, and wounded to the death. Then was he borne to the king's tent, and King Arthur sorrowed over him as it had been his own son. "Alas!" said he; "in Sir Lancelot and in you I had my greatest earthly joy, and now is all gone from me." And Sir Gawain answered, with a feeble voice, "My lord and king, I know well my death is come, and through my own wilfulness, for I am smitten in the wound Sir Lancelot gave me. Alas! that I have been the cause of all this war, for but for me thou hadst been now at peace with Lancelot, and then had Modred never done this treason. I pray ye, therefore, my dear lord, be now agreed with Lancelot, and tell him, that although he gave me my death-wound, it was through my own seeking; wherefore I beseech him to come back to England, and here to visit my tomb, and pray for my soul." When he had thus spoken, Sir Gawain gave up his ghost, and the king grievously mourned for him. Then they told him that the enemy had camped on Barham Downs, whereat, with all his hosts, he straightway marched there, and fought again a bloody battle, and overthrew Sir Modred utterly. Howbeit, he raised yet another army, and retreating ever from before the king, increased his numbers as he went, till at the farthest west in Lyonesse, he once more made a stand. Now, on the night of Trinity Sunday, being the eve of the battle, King Arthur had a vision, and saw Sir Gawain in a dream, who warned him not to fight with Modred on the morrow, else he would be surely slain; and prayed him to delay till Lancelot and his knights should come to aid him. So when King Arthur woke he told his lords and knights that vision, and all agreed to wait the coming of Sir Lancelot. Then a herald was sent with a message of truce to Sir Modred, and a treaty was made that neither army should assail the other. But when the treaty was agreed upon, and the heralds returned, King Arthur said to his knights, "Beware, lest Sir Modred deceive us, for I in no wise trust him, and if swords be drawn be ready to encounter!" And Sir Modred likewise gave an order, that if any man of the king's army drew his sword, they should begin to fight. And as it chanced, a knight of the king's side was bitten by an adder in the foot, and hastily drew forth his sword to slay it. That saw Sir Modred, and forthwith commanded all his army to assail the king's.